Tamper-Proof Envelopes

43 results
TripLOK 9" x 12" Tamper-Evident Bags, Opaque, 100/Pack image 1
Item: 446580
Model: 585032

The Highest-Performing Security Bag in Banking.Capacity: 1000 notes/1 bundle.High visibility void message reveals tampering attempts.Patented triple-seal closure with interior adhesive leaves no openings once sealed.Special thermochromic ink turns red when subjected to heat.Security micro perforation immediately reveals attempts to pull closure up.Anti-static liner does not cling to hands and clothes, speeding up processing.Aqua detect ink reveals exposure to fluid.Large serial numbers and barcodes for easy tracking via CCTV.Security micro printing and indented side welds preventing cut and resealing.Purchase 5 packs to receive a carton.9" x 12" TripLOK Tamper-Evident Bags, Opaque, 100/Pack

Price isĀ  $44.79
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Staples InstantSeal Security Tinted #8 Double Window Envelopes, 3 5/8" x 8 5/8", White, 500/Box (ST63337) image 1
Item: 1775860
Model: ST63337

Handle giant mailing projects with ease by using these white InstantSeal security-tinted double-window envelopes. Each one features two transparent windows to let the return and shipping addresses show through, removing the need for manual label application, while the security-tint design helps ensure third parties don't read private information. These security-tinted double-window envelopes are self-sealing, so you don't need to lick the flap or use a sponge..New and improved envelope.Tamper proof, perforated seal to keep documents safe.Pressure sensitive adhesive requires no moisture for a secure hold.Just pull the bottom flap up and fold the top flap down to seal.#8-5/8 business envelopes are suitable for all your mailing needs.These envelopes measure 3 5/8"H x 8 5/8"L in size, providing enough space for your mail.Dimensions: Top Window Dimensions: 7/8" x 3-1/2", 5/8" from Left, 2-1/4" from Bottom. Bottom Window Dimensions: 1" x 4", 5/8" from Left, 5/8" from Bottom.Security-tinted pattern helps to discourage reading sensitive information through the outside of the envelope.White color is ideal for business or personal correspondence.Double-window envelopes for easy display of addresses.Convenient box of 500 envelopes ensures ample supply.The flap is on the long side for ease of use.Make mailing projects manageable with this 500-pack of white Staples InstantSeal security-tinted double-window #8-5/8 envelopes.

Price isĀ  $39.99
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Staples InstantSeal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (ST63338) image 1
Item: 1775861
Model: ST63338

Give outgoing mail a professional look with these Staples InstantSeal double-window self-sealing envelopes. Each envelope has a double window, letting you display both the destination address and the return address at the same time, while the self-sealing flap makes it easy to close and secure each envelope. These Staples double-window self-sealing envelopes have a security-tint design that helps keep confidential information private..New and improved envelope.Tamper proof, perforated seal to keep documents safe.Pressure sensitive adhesive requires no moisture for a secure hold.Just pull the bottom flap up and fold the top flap down to seal.#9 business envelopes are suitable for all your mailing needs.These envelopes measure 3 7/8"H x 8 7/8"L in size, providing enough space for your mail.Dimensions: Top Window: 1-3/16" x 3-1/2" Position: 3/8" from left and 2" from bottom. Bottom Window: 1" x 4" Position: 3/8" from left and 1/2" from bottom.Security-tinted pattern helps to discourage reading sensitive information through the outside of the envelope.White color is ideal for business or personal correspondence.Double-window envelopes for easy display of addresses.Convenient box of 500 envelopes ensures ample supply.The flap is on the long side for ease of use.Send mail easily with this 500-pack of Staples InstantSeal security-tinted double-window self-sealing #9 envelopes.

Price isĀ  $39.99
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Staples Reveal N Seal Self Seal Security Tinted #8 Business Envelope, 3 5/8" x 8 5/8", White, 300/Box (67539S) image 1
Item: 902475
Model: 20566-US

Staples Reveal-N-Seal 67539S #8 white double window envelope measuring 3 5/8" x 8 5/8", features strong, tamper-evident seal to protect confidential documents. It has small perforations along the flaps for tampering. This security-tinted envelope offers self-sealing closure that requires no moisture to seal..Comes in white color.Trade size: #8, Envelope size: 3 5/8" x 8 5/8".Paper weight: 24 lbs.Envelope/mailer type: Tax and business form.Closure: Self-adhesive.Seam type: Contemporary.Window position of bottom left/top left.Exterior material: Paper.Finish: Wove.Suggested use: Double window for invoices.Format/border: Standard, Opening: Open side.Security tinted for added safety.3 5/8" x 8 5/8" Reveal-N-Seal invoice size double window envelopes and its unique glue provides for longer shelf life than normal self-seal envelopes.

Price isĀ  $49.99
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89
Staples InstantSeal Security Tinted #10 Double Window Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST63339) image 1
Item: 1775862
Model: ST63339

Send important mailings in these legal-size Staples InstantSeal envelopes. The security tint printed on the inside prevents sensitive data from showing through, making these envelopes ideal for mailing invoices, checks, or classified information. Each envelope in this 500-count box of Staples envelopes features a double-window cutout on its face so addresses show through, and a convenient self-seal closure on the back lets you quickly and neatly secure contents for hassle-free mailing..New and improved envelope.Tamper proof, perforated seal to keep documents safe.Pressure sensitive adhesive requires no moisture for a secure hold.Just pull the bottom flap up and fold the top flap down to seal.#10 business envelopes are suitable for all your mailing needs.These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail.Dimensions: Top Window: 3-1/2" x 1-1/4", Bottom Window: 4" x 1".Security-tinted pattern helps to discourage reading sensitive information through the outside of the envelope.White color is ideal for business or personal correspondence.Double-window envelopes for easy display of addresses.Convenient box of 500 envelopes ensures ample supply.The flap is on the long side for ease of use.Mail all your business correspondence with this 500-count box of Staples InstantSeal security-tinted double-window envelopes.

Price isĀ  $39.99
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15
Staples QuickStrip EasyClose Self Seal Security Tinted Catalog Envelopes, 10" x 13", White, 100/Box (ST19957/19957) image 1
Item: 871075
Model: ST19957/19957

Keep private information confidential with these Staples EasyClose tamper-evident security-tinted catalog envelopes. Each envelope has an adhesive strip on the flap that makes it easy to seal contents inside, while the security tint and tamper-evident features help ensure that sensitive information is not read by third parties. These Staples EasyClose tamper-evident security-tinted catalog envelopes are built with 28-pound wove paper for durability..Catalog envelope is perfect for confidential documentation.Comes in white and made of paper.Dimensions: 10"L x 13"H; size #13.EasyClose peel-and-stick closures to speed up mail preparation time.Envelopes come in boxes of 100, making them an easy and economical choice.QuickStrip closure is quick and easy to use: simply remove strip and press to close.Protect confidential documents from prying eyes with this 100-pack of Staples EasyClose 10 x 13-inch tamper-evident security-tinted catalog envelopes.

Price isĀ  $35.09
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41
JAM Paper #10 Tyvek Business Envelope, 4 1/8" x 9 1/2", White, 50/Pack (2131077C) image 1
Item: 2329434
Model: 2131077C

JAM PaperĀ® White #10 Business TyvekĀ® Envelopes measure 4 1/8 x 9 1/2 inches each and feature a versatile bright white color. This pack contains a total of 50 envelopes. Each one is made out of out of smooth, durable, tear-proof, 10% recycled Tyvek material. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. If you need to mail a letter or important paperwork while keeping it safe from the weather, these envelopes are perfect for you..Business Envelope, #10.Dimensions: 4 1/8" x 9 1/2".Made with White Tyvek.Gummed Closure, Commercial Flap.50 envelopes per pack.Safety Data Sheet

Price isĀ  $29.49
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Staples Reveal-N-Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (1017262) image 1
22% off Ā of Staples Reveal-N-Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (1017262)
Item: 24640907
Model: ST63385-CC

Send mail easily with this 500-pack of Staples security-tinted double-window, tamper evident #9 envelopes. These envelopes feature a pressure-sensitive self-seal closure and wallet flap for quick, mess-free sealing. The security-tinted interior keeps contents private, while the double-window layout clearly displays both return and destination addresses. Sized at 3 7/8" x 8 7/8", they’re ideal for checks, statements, and other business documents. Each box includes 500 white envelopes. Perfect for high-volume mailing..#9 business envelopes (3 7/8" x 8 7/8") are ideal for everyday mailing needs.24 lb white envelopes made from durable paper for professional or personal use.Reveal-N-Seal security envelopes have a tamper evident perforated seal and close without moisture; press the 2 flaps together for a permanent seal.Security-tinted interior protects sensitive information from view.Top window (1-3/16" x 3-1/2", 3/8" from left, 2" from bottom); Bottom window (1" x 4", 3/8" from left, 1/2" from bottom).Convenient box of 500 envelopes ensures long-lasting supply.Staples Reveal-N-Seal #9 Double Window Envelopes offer secure, professional mailing with a clean, self-sealing design

Price isĀ  $39.99
$51.29
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JAM Paper #10 Tyvek Business Envelope, 4 1/8" x 9 1/2", White, 25/Pack (2131077) image 1
Item: 2329379
Model: 2131077

JAM PaperĀ® Heavy Duty Tyvek Envelopes are some of the strongest and sturdiest envelopes available. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Tyvek is composed of high-density polyethylene fibers, a synthetic material that is extremely hard to rip and tear. This type of material is the same used to build and insulate houses, so you can be assured the materials inside these enveloeps will be well protected from the elements. They are lightweight, tear proof and water resistant, protecting documents from inclement weather, or accidental spills that can occur around the office. Use them for organizing or mailing important documents at school, home, the office, or out on the go. Envelopes are available in an aray of colors and sizes, so finding one to fit your needs shouldn't be an issue. So if you are looking for that large heavy duty protective envelope, JAM Paper's Tyvek Envelopes are a great option!.Business Envelopes, #10.Dimensions: 4 1/8" x 9 1/2".Made with White Tyvek.Gummed Closure, Commercial Flap.25 envelopes per pack.Safety Data Sheet.JAM PaperĀ® Tyvek Envelopes provides exceptionally durable protection for your mailed items!

Price isĀ  $15.89
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Staples Reveal-N-Seal Security Tinted #8-5/8 Double Window Envelopes, 3 5/8" x 8 5/8", White, 500/Box (1017263) image 1
22% off Ā of Staples Reveal-N-Seal Security Tinted #8-5/8 Double Window Envelopes, 3 5/8" x 8 5/8", White, 500/Box (1017263)
Item: 24640908
Model: ST63386-CC

These #8-5/8 double window business envelopes are designed to streamline your mailing process while keeping sensitive information protected. Featuring a pressure-sensitive tamper evident closure, they offer a clean, secure seal without the need for moisture. The security-tinted interior ensures privacy, while the dual window layout clearly displays sender and recipient addresses. Sized at 3 5/8" x 8 5/8", these white envelopes are ideal for checks, invoices, and other business documents. Each box includes 500 envelopes, making them perfect for high-volume mailing needs..#8-5/8 business envelopes (3 5/8" x 8 5/8") are ideal for everyday mailing needs.24 lb white envelopes made from durable paper for professional or personal use.Reveal-N-Seal security envelopes have a tamper evident perforated seal and close without moisture; press the 2 flaps together for a permanent seal.Security-tinted interior protects sensitive information from view.Top window (7/8" x 3-1/2", 5/8" from left, 2-1/4" from bottom); Bottom window (1" x 4", 5/8" from left, 5/8" from bottom).Convenient box of 500 envelopes ensures long-lasting supply.Staples Reveal-N-Seal #8-5/8 Check Size Double Window Envelopes offer a secure, professional mailing.

Price isĀ  $39.99
$51.29
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Staples Reveal-N-Seal Security Tinted #10 Double Window Envelopes, 4 1/8" x 9 1/2", White, 500/Box (1017264) image 1
29% off Ā of Staples Reveal-N-Seal Security Tinted #10 Double Window Envelopes, 4 1/8" x 9 1/2", White, 500/Box (1017264)
Item: 24640909
Model: ST63387-CC

Ensure your business correspondence stays protected and professional with Staples Reveal-N-Seal #10 Double Window Envelopes. Designed with a pressure-sensitive tamper evident closure, these envelopes eliminate the need for moistening, making mailing quick and clean. The security-tinted interior keeps sensitive information private, while the double-window design clearly displays both sender and recipient addresses. Sized at 4 1/8" x 9 1/2", these white envelopes are perfect for invoices, checks, and other important documents. Each box contains 500 envelopes, ensuring you have a reliable supply for high-volume mailing needs..#10 business envelopes (4 1/8" x 9 1/2") are ideal for everyday mailing needs.24 lb white envelopes made from durable paper for professional or personal use.Reveal-N-Seal security envelopes have a tamper evident perforated seal and close without moisture; press the 2 flaps together for a permanent seal.Security-tinted interior protects sensitive information from view.Top window: 1-1/4" x 3-1/2"; 3/8" from left; 2" from bottom; Bottom window: 1" x 4"; 3/8" from left; 1/2" from bottom.Convenient box of 500 envelopes ensures long-lasting supply.Staples Reveal-N-Seal #10 Double Window Envelopes offer secure, hassle-free mailing with a professional finish.

Price isĀ  $39.99
$56.39
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Staples QuickStrip EasyClose Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (19956) image 1
Item: 871070
Model: 19956

Make sure that sensitive information and paperwork remain completely sealed and confidential with these tamper-evident envelopes. Featuring a security tint that masks the contents inside, these envelopes are ideal for departments that frequently deal with private information. The #10 Staples security-tint envelopes have a tamper-proof seal that makes it easy to detect if the envelope has been opened..US #10 business envelopes are suitable for many mailing projects.Made from white 24 lb. paper for durability.These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail.EasyClose closure with square flap seals securely without moistening.Security-tinted pattern helps to discourage reading sensitive information through the outside of the envelope.100 envelopes per box.Tamper-resistant envelope provides extra security for item being shipped.The flap is on the long side for easier filling.Keep your important letters and documents private with this 100-pack of Staples EasyClose tamper-evident security-tint envelopes.

Price isĀ  $15.19
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Packing List Envelope, 4.5" x 7.5", 1000/Carton (PL472) image 1
Item: 948636
Model: PL472

The Packing list envelope in clear color measuring 4.5" x 7.5" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back Loading..Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $83.29
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Packing List Envelopes, 5.5" x 7", 1000/Carton (PL21) image 1
Item: 939201
Model: PL21

The Packing List Envelopes are designed for secure and professional document handling. These clear, pressure-sensitive envelopes allow documents to remain visible while being protected. With a durable 2-mil thickness, they are tamper-proof and keep contents clean and safe. The strong adhesive backing ensures secure attachment to packages or surfaces, making them ideal for shipping, storage, or organizational needs. Each carton includes 1,000 envelopes, providing a practical and economical solution for businesses or personal use..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back Loading.

Price isĀ  $65.39
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Packing List Envelopes, 9.5" x 12", 500/Carton (PL478) image 1
Item: 24450236
Model: PL478

The Packing List Envelopes are designed to securely protect and display shipping documents. These clear, pressure-sensitive envelopes are made with a durable 2-mil thickness, ensuring tamper-proof protection and keeping contents safe from dirt, moisture, and damage. The strong adhesive backing allows for easy and secure attachment to packages or surfaces, while the transparent face ensures documents remain visible for quick identification. With 500 envelopes per carton, they provide a practical and economical solution for shipping, storage, and organizational needs..Clear Visibility: Transparent design ensures shipping documents are easily identifiable during transport..Tamper-Proof Protection: Made with durable 2-mil thickness to safeguard contents against dirt, moisture, and damage..Strong Adhesive Backing: Secures the envelope firmly to packages or surfaces for reliable use..Convenient Size: Spacious 9.5" x 12" dimensions accommodate large documents such as packing slips and invoices..Bulk Packaging: Includes 500 envelopes per carton, offering a cost-effective solution for high-volume shipping needs.

Price isĀ  $99.49
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Tape Logic "Clear Face" Document Envelopes, 5 1/2" x 4 1/2", Clear, 1000/Case (PL522) image 1
Item: 23978337
Model: PL522

5 1/2 x 4 1/2" "Clear Face" Document Envelopes. Transparent pressure sensitive envelopes allow your document to be read. 2 Mil tamper proof envelopes keep documents clean and safe. Back loading..Transparent pressure sensitive envelopes allow your document to be read..2 Mil tamper proof envelopes keep documents clean and safe.Back loading

Price isĀ  $54.29
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Packing List Envelope, 7" x 10", 1000/Carton (PL520) image 1
Item: 24449694
Model: PL520

The Packing list envelope in clear color measuring 7" x 10" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 500 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back loading.

Price isĀ  $142.79
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Tape Logic "Clear Face" Document Envelopes, 7" x 6", Clear, 1000/Case (PL524) image 1
Item: 23978419
Model: PL524

7 x 6" "Clear Face" Document Envelopes. Transparent pressure sensitive envelopes allow your document to be read. 2 Mil tamper proof envelopes keep documents clean and safe. Back loading..Transparent pressure sensitive envelopes allow your document to be read..2 Mil tamper proof envelopes keep documents clean and safe.Back loading

Price isĀ  $73.19
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Packing List Envelope, 5.125" x 8", 1000/Carton (PL473) image 1
Item: 948637
Model: PL473

The Packing list envelope in clear color measuring 5.125" x 8" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back Loading..Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $100.89
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Quality Park Survivor Tyvek Self Seal Inter-Departmental Envelope 9" x 12", White, 100/Box (QUAR2400) image 1
Item: 70510
Model: QUAR2400

Deliver confidential contracts, reports, and other important materials securely with these tamper-indicating envelopes. Featuring a self-sealing closure that reveals the word OPENED when the seal is broken, these mailers are made of 14-pound Tyvek to resist tears, punctures, and moisture for added protection. These Quality Park Survivor catalog mailers come 100 per box, making them perfect for large projects..Catalog envelopes are a convenient and reliable choice for personal and business mailing purposes.Comes in white and made of Tyvek.Dimensions: 9"L x 12"H.Self-seal for a secure seal.Envelopes come in boxes of 100, making them an easy and economical choice.Water- and moisture-resistant.Safeguard sensitive documents with these Quality Park Survivor tamper-indicating catalog mailers.

Price isĀ  $274.99
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JAM Paper Booklet Envelopes with Peel & Seal Closure, 9.5 x 12.5, White, 500/Box (367934168) image 1
Item: 24295254
Model: 367934168

JAM PaperĀ® Heavy Duty Tyvek Envelopes are some of the strongest and sturdiest envelopes available. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Tyvek is composed of high-density polyethylene fibers, a synthetic material that is extremely hard to rip and tear. This type of material is the same used to build and insulate houses, so you can be assured the materials inside these enveloeps will be well protected from the elements. The envelopes themselves feature flap with a self adhesive strip closure. They are lightweight, tear proof and water resistant, protecting documents from inclement weather, or accidental spills that can occur around the office. Use them for organizing or mailing important documents at school, home, the office, or out on the go. Envelopes are available in an aray of colors and sizes, so finding one to fit your needs shouldn't be an issue. So if you are looking for that large heavy duty protective envelope,JAM PaperĀ® Tyvek Envelopes are a great option!.Durable Tyvek Envelopes - White.Size: 9.5" x 12.5".Quantity: 500 Envelopes per Box.These tyvek envelopes are very durable and much more tear resistant then regular paper envelopes. These envelopes are 10% recycled, have a commercial flap, and a semi-smooth textured finish..These Tyvek Envelopes are made out of the same tyvek material that helps insulate houses, making them very durable! Use these for all of your important personal or business mailings, or around the home and office!.With Jam Paper's wide variety of speciality envelopes you can be sure to find what you need for your projects no matter how large or small.

Price isĀ  $540.69
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Packing List Envelope, 6 1/2" x 10", 1000/Carton (PL476) image 1
Item: 24449692
Model: PL476

The Packing list envelope in clear color measuring 6 1/2" x 10" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back Loading.

Price isĀ  $78.69
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Packing List Envelope, 4 1/2" x 6", 1000/Carton (PL2) image 1
Item: 940062
Model: PL2

The Packing list envelope in clear color measuring 4 1/2" x 6" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Protect documents during shipping..Panel face, colored Packing List Envelopes are pre-printed with "Packing List Enclosed" on heavy 2 Mil poly..Envelopes open along the first dimension.

Price isĀ  $55.49
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Quality Park Reveal-N-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/8" x 9 1/2", White, 500/Box (1014438) image 1
Item: 24629392
Model: 1014438

Quality Park #10 Reveal-N-Seal Envelopes are security tinted with a patented tamper evident seal. Stock up on value packed boxes of 500 for all of your mailing needs..#10 Business double window envelopes with side seams are great for bulk mailings.These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail.Made from 24# White Wove for durability.Our dependable Reveal-N-Seal patented envelope design has a unique flap that folds up and into place for a firm seal that won't close and stick prematurely; plus, no peel-strip waste to clean up!.Security tinted pattern helps to discourage reading sensitive information through the outside of the envelope.Double window envelopes conveniently display addresses; Top window: 1-1/4" x 3-1/2"; 3/8" from left; 2" from bottom; Bottom window: 1" x 4"; 3/8" from left; 1/2" from bottom.500 envelopes per box ensures ample supply.Give invoices, bills, and other official correspondence a professional look with these Quality Park Reveal-N-Seal self-closure security-tinted double-window white envelopes.

Price isĀ  $124.09
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5 1/2" x 10" Clear Face Document Envelopes, Clear, 1000/Carton (PL28) image 1
Item: 939200
Model: PL28

2 Mil tamper proof envelopes keep documents clean and safe..One adhesive backing strip to load documents.Back Loading.

Price isĀ  $92.99
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Packing List Envelope, 4 1/2" x 6", 1000/Carton (PL5) image 1
Item: 948646
Model: PL5

The Packing list envelope in clear color measuring 4.5" x 6" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back Loading..Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $83.39
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Staples Gummed Inter-Departmental Envelopes, 10" x 13", Multi Colors, 100/Box (SPL487513) image 1
Item: 487513
Model: ST19845

Share critical documents with other office workers or departments with these interdepartmental envelopes. The gummed closures keep items stored safely inside, while the convenient labeling section lets you define the intended recipient. These envelopes boast a tamper-evident design for added security. With a bright red color scheme and clearly marked notices, these Staples interdepartmental envelopes are easy to spot as being confidential..Inter-departmental envelopes are easy to spot as being confidential.Envelope size: 13"H x 10"W.The gummed flap closure keeps your documents secured inside the envelope.Envelopes have a square flap.Multi colored and made of paper.100 envelopes per box.Send sensitive information throughout your building securely with these Staples personal and confidential interdepartmental envelopes.

Price isĀ  $29.49
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Tape Logic "Clear Face" Document Envelopes, 12" x 15", Clear, 500/Case (PL527) image 1
Item: 23978438
Model: PL527

12 x 15" "Clear Face" Document Envelopes. Transparent pressure sensitive envelopes allow your document to be read. 2 Mil tamper proof envelopes keep documents clean and safe. Back loading..Transparent pressure sensitive envelopes allow your document to be read..2 Mil tamper proof envelopes keep documents clean and safe.Back loading

Price isĀ  $205.09
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Packing List Enclosed Envelope, 4.5" x 5.5", Red, 1000/Carton (ST56492) image 1
Item: 688586
Model: ST56492

Keep shipping papers safe with this panel-style "Packing List Enclosed" envelope. The envelope is easy to load through the side and adheres securely to most standard packing materials. This Staples 4.5 x 5.5-inch packing list envelope comes in a carton of 1000, making them ideal for busy warehouses and order fulfillment centers..Packing list envelope with message "Packing List Enclosed" protects and secures documents.Side-loading envelope with partial red panel face.Dimensions: 4.5" x 5.5".1000 packing list envelopes per carton.Prevent tampering, ripping, tearing and other damage to packing lists by using this 1000-count carton of Staples 4.5 x 5.5-inch panel-style packing list envelopes.

Price isĀ  $43.29
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Packing List Envelope, 10 3/4" x 6 3/4", 500/Carton (PL70) image 1
Item: 24449700
Model: PL70

The Packing list envelope in clear color measuring 10 3/4" x 6 3/4" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 500 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back loading.

Price isĀ  $78.99
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Quality Park Survivor Tyvek Self Seal Document Envelope 10" x 13", White, 100/Box (QUAR2420) image 1
Item: 70505
Model: QUAR2420

Safely mail photographs or sensitive paperwork in these tough, durable Tyvek mailers that protect contents from punctures, scratches, moisture or impact-related damage. These Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes stay closed during transit and special panels reveal the word "Opened" in bold red letters if forced open..Catalog envelopes are a convenient and reliable choice for personal and business mailing purposes.White Tyvek envelopes provide superior protection for mailing important materials or documents.Dimensions: 10"L x 13"H.Self seal for secured sealing.Envelopes come in boxes of 100, making them an easy and economical choice.Water- and moisture-resistant.Flap-Stik Tyvek mailer envelopes.Ship fragile, important documents securely with this pack of Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes

Price isĀ  $225.09
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JAM Paper Booklet Envelopes with Peel & Seal Closure, 6 x 9, White, 500/Box (367934164) image 1
Item: 24295256
Model: 367934164

JAM PaperĀ® Heavy Duty Tyvek Envelopes are some of the strongest and sturdiest envelopes available. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Tyvek is composed of high-density polyethylene fibers, a synthetic material that is extremely hard to rip and tear. This type of material is the same used to build and insulate houses, so you can be assured the materials inside these enveloeps will be well protected from the elements. The envelopes themselves feature flap with a self adhesive strip closure. They are lightweight, tear proof and water resistant, protecting documents from inclement weather, or accidental spills that can occur around the office. Use them for organizing or mailing important documents at school, home, the office, or out on the go. Envelopes are available in an aray of colors and sizes, so finding one to fit your needs shouldn't be an issue. So if you are looking for that large heavy duty protective envelope,JAM PaperĀ® Tyvek Envelopes are a great option!.Durable Tyvek Envelopes - White.Size: 6" x 9".Quantity: 500 Envelopes per Box.These tyvek envelopes are very durable and much more tear resistant then regular paper envelopes. These envelopes are 10% recycled, have a commercial flap, and a semi-smooth textured finish..These Tyvek Envelopes are made out of the same tyvek material that helps insulate houses, making them very durable! Use these for all of your important personal or business mailings, or around the home and office!.With Jam Paper's wide variety of speciality envelopes you can be sure to find what you need for your projects no matter how large or small.

Price isĀ  $366.59
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Packing List Envelope, 3.5" x 5", Clear Face, 1000/Case (PL471) image 1
Item: 948635
Model: PL471

The Packing list envelope in clear color measuring 3.5" x 5" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent pressure sensitive envelopes allow your document to be read.2 mil tamper proof envelopes keep documents clean and safe.Hot melt adhesive backing provides strong adhesion to paper and corrugated products.Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $44.99
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Packing List Envelope, 9 1/2" x 12", Clear, 500/Case (PL478) image 1
Item: 948211
Model: PL478

The Packing list envelope in clear color measuring 9 1/2" x 12" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 500 per case..Dimensions: 9 1/2" x 12".2 mil tamper proof envelopes keep documents clean and safe.Back Loading.500/Case.Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $91.39
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JAM Paper Booklet Envelopes with Peel & Seal Closure, 6 x 11.375, White, 500/Box (367934165) image 1
Item: 24295264
Model: 367934165

JAM PaperĀ® Heavy Duty Tyvek Envelopes are some of the strongest and sturdiest envelopes available. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Tyvek is composed of high-density polyethylene fibers, a synthetic material that is extremely hard to rip and tear. This type of material is the same used to build and insulate houses, so you can be assured the materials inside these enveloeps will be well protected from the elements. The envelopes themselves feature flap with a self adhesive strip closure. They are lightweight, tear proof and water resistant, protecting documents from inclement weather, or accidental spills that can occur around the office. Use them for organizing or mailing important documents at school, home, the office, or out on the go. Envelopes are available in an aray of colors and sizes, so finding one to fit your needs shouldn't be an issue. So if you are looking for that large heavy duty protective envelope,JAM PaperĀ® Tyvek Envelopes are a great option!.Durable Tyvek Envelopes - White.Size: 6" x 11 3/8".Quantity: 500 Envelopes per Box.These tyvek envelopes are very durable and much more tear resistant then regular paper envelopes. These envelopes are 10% recycled, have a commercial flap, and a semi-smooth textured finish..These Tyvek Envelopes are made out of the same tyvek material that helps insulate houses, making them very durable! Use these for all of your important personal or business mailings, or around the home and office!.With Jam Paper's wide variety of speciality envelopes you can be sure to find what you need for your projects no matter how large or small.

Price isĀ  $365.49
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Quality Park Survivor Tyvek Self Seal Catalog Envelopes, 10"L x 13"H, White, 25/Box (QUAR4202) image 1
Item: 813458
Model: QUAR4202

Safely mail photographs or sensitive paperwork in these tough, durable Tyvek mailers that protect contents from punctures, scratches, moisture, or impact-related damage. These Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes stay closed during transit, and special panels reveal the word "Opened" in bold red letters if forced open..Expansion envelopes offer security for bulky mailings.White Tyvek envelopes provide superior protection for mailing important materials or documents.Dimensions: 10"L x 13"H.Flap-Stik self-seal closure provides a clean, quick seal immediately upon contact, the peel-off strip protects the adhesive from dust for a longer shelf life.Envelopes come in boxes of 25, making them an easy and economical choice for the business that needs to spend wisely without sacrificing quality.Tyvek material is lightweight and can save on postage.Tear- and moisture-resistant.Gusseted sides expand up to 1.5" to accommodate bulky items.Protect important documents and confidential files with this pack of Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes.

Price isĀ  $78.69
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Packing List Envelope, 4 1/2" x 5 1/2", 1000/Carton (PL11) image 1
Item: 940063
Model: PL11

The Packing list envelope in clear color measuring 4 1/2" x 5 1/2" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent envelopes allow your document to be clearly read through the poly..2 Mil tamper proof envelopes keep documents clean and safe..Back Loading.

Price isĀ  $36.59
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Staples Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (21571) image 1
Item: 329850
Model: ST21571-CC

Ship marketing materials without having to fold them with these white tear-resistant catalog envelopes. Each one resists tears, punctures and moisture thanks to the 28-pound wove material, and the self-seal closure feature helps secure contents. These Staples white tear-resistant catalog envelopes have perforated seals to alert you of tampering and a tinted interior to prevent third parties from seeing the contents..Catalog envelopes are perfect for catalogs, brochures, and leaflets.Durable, lightweight, and tear-resistant 10gsm woven paper..Dimensions: 10"L x 13"H, size #13.Self seal for secured sealing.Envelopes come in boxes of 100.Make shipping marketing materials easy with these Staples 10 x 13-inch white tear-resistant catalog envelopes.

Price isĀ  $88.29
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Packing List Envelope, 4.5" x 5.5", Clear, "Packing List Enclosed", 1000/Case (ENVPQ11) image 1
Item: 948612
Model: PL11

The Packing list envelope in clear color measuring 4.5" x 5.5" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Pressure sensitive envelopes are the industry standard for quality performance.Specially formulated hot melt adhesive insures instant bonding to boxes, cases, tubes and other containers.2 mil tamper proof envelopes keep documents clean and safe.Back Loader style keeps documents secure in transit because they cannot be removed without destroying the envelope.Envelopes open along the first dimension.Dimensions listed are outside - deduct 1/2" for inside dimensions.Loading Style: Back Loading.Mil: 2 Mil.Weight: 8.Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $47.49
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Staples Reveal-N-Seal #9 Double Window Envelope, 3 7/8" x 8 7/8", White, 300/Box (20567-US) image 1
Item: 902474
Model: 67529S

The Quality Park Reveal-N-Seal 67529S #9 white double window envelope measuring 3 7/8" x 8 7/8", features strong, tamper-evident seal to protect confidential documents. It has small perforations along the flaps for tampering. This security-tinted envelope offers self-sealing closure that requires no moisture to seal..Comes in white color.Trade size: #9, Envelope size: 3 7/8" x 8 7/8".Paper weight: 24 lbs..Envelope/mailer type: Tax and business form.Closure: Self-adhesive.Seam type: Contemporary.Window position of bottom left/top left.Exterior material: Paper.Finish: Wove.Suggested use: Double window for invoices.Format/border: Standard, Opening: Open side.Security tinted for added safety.Box of 300 envelopes.3 7/8" x 8 7/8" Reveal-N-Seal invoice size double window envelopes and its unique glue provides for longer shelf life than normal self-seal envelopes.

Price isĀ  $49.99
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Staples Packing List Envelope, 10" x 12" , Clear, 500/Case (PL100) image 1
Item: 948210
Model: PL100

The Packing list envelope in clear color measuring 10" x 12" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 500 per case..Dimensions: 10" x 12".2 mil tamper proof envelopes keep documents clean and safe.Back Loading.500/Case.Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $129.69
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Staples Packing List Envelope, 6.5" x 10", Clear Face, 1000/Case (PL476) image 1
Item: 948639
Model: PL476

The Packing list envelope in clear color measuring 6.5" x 10" is made of 2 mil tamper proof material to keep documents clean and safe. Envelope has back loading design and helps you keep things organized, sold as 1000 per case..Transparent pressure sensitive envelopes allow your document to be read.2 mil tamper proof envelopes keep documents clean and safe.Hot melt adhesive backing provides strong adhesion to paper and corrugated products.Packing List Envelope is transparent pressure sensitive envelope that allows your document to be read.

Price isĀ  $163.79
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Quality Park Survivor Tyvek Self Seal Catalog Envelopes, 12"L x 16"H, White, 25/Box (QUAR4292) image 1
Item: 813459
Model: QUAR4292

Safely mail photographs or sensitive paperwork in these tough, durable Tyvek mailers that protect contents from punctures, scratches, moisture, or impact-related damage. These Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes stay closed during transit, and special panels reveal the word "Opened" in bold red letters if forced open..Expansion envelopes offer security for bulky mailings.White Tyvek envelopes provide superior protection for mailing important materials or documents.Dimensions: 12"L x 16"H.Flap-Stik self-seal closure provides a clean, quick seal immediately upon contact, the peel-off strip protects the adhesive from dust for a longer shelf life.Envelopes come in boxes of 25, making them an easy and economical choice for the business that needs to spend wisely without sacrificing quality.Tyvek material is lightweight and can save on postage.Tear- and moisture-resistant.Gusseted sides expand up to 2" to accommodate bulky items.Ensure important materials arrive undamaged with this pack of Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes.

Price isĀ  $112.69
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2

About Tamper-Proof Envelopes

Tamper-proof envelopes are essential for secure mailing and shipping, designed to protect sensitive documents and valuable items from unauthorized access. These envelopes provide peace of mind, ensuring that contents remain confidential and intact during transit.

Constructed with durable materials, tamper-proof envelopes are ideal for businesses and individuals who prioritize security. Their unique designs deter tampering, making them a reliable choice for legal documents, financial information, and other sensitive materials.

When selecting tamper-proof envelopes, consider features such as self-sealing closures and tear-resistant materials that enhance security. Many options also include visible tamper-evident seals, providing clear evidence if an envelope has been compromised.

Additionally, look for envelopes with varying sizes and styles to accommodate different mailing needs. Options with opaque exteriors help maintain privacy, while those with easy-to-use designs streamline the shipping process, making them a practical choice for any mailing requirement.