Sponsored Products
Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (37793)~#|#~s0288241_sc7
Item # : 510623
Model # : QUA37793
Quality Park 9 1/2" x 12 1/2" Clasp envelope in brown color features a heavily gummed flap with sturdy metal clasp for secured seal.
  • 9-1/2" x 12-1/2"
  • Heavily gummed flap with sturdy, reusable metal clasp provides extra holding power
Price is $37.49
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Staples Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Brown, 100/Box (534800/17104)~#|#~8F04272A-2149-420C-9D7DFC65633D51B8_sc7
Staples Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Brown, 100/Box (534800/17104)~#|#~BD24A3C7-A3F5-42F1-85B5B001F34A5072_sc7
Item # : 534800
Model # : ST534800-CC
Mail promotional material safely with this 100-pack of Staples kraft 9 x 12-inch brown self-sealing catalog envelopes.
  • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $32.39
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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JAM Paper 9 x 12 Open End Catalog Envelopes, White, 25/Pack (1623197)~#|#~sp111772495_sc7
JAM Paper 9 x 12 Open End Catalog Envelopes, White, 25/Pack (1623197)~#|#~sp111772494_sc7
Item # : 366693
Model # : 1623197
JAM Paper® Open end envelope measuring 9" x 12" is perfectly sized for business correspondence, comes in white color and is sold as 25 per pack.
  • Size: 9" x 12"
  • Gummed closure with straight flap
Price is $11.19
Unit of measure 25/Pack
Delivery by Fri, Jun 27
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 4Bar A1, 3.8125 x 5.1875, Clear, 100/Pack (4BARCELLO)~#|#~m000068412_sc7
Item # : 262890
Model # : 4BARCELLO
No reviews yet
  • Perfect for invitation, announcement, promotion and greeting
  • Size: 3 13/16" x 5 3/16"
Price is $7.79
Unit of measure 100/Pack
Delivery by Fri, Jun 27
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Staples Self Seal Catalog Envelopes, 10" x 13", White, 100/Box (SPL478157)~#|#~s1224502_sc7
Staples Self Seal Catalog Envelopes, 10" x 13", White, 100/Box (SPL478157)~#|#~s1224632_sc7
Item # : 478157
Model # : ST19807-CC
Protect essential documents from damage with this 100-pack of Staples 10 x 13-inch white wove self-sealing catalog envelopes.
  • Catalog envelope is perfect for catalogs, brochures, and documents
  • Comes in white and made of paper
Price is $42.09
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Staples Brand Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (570240/99294)~#|#~1D22CEC3-EF53-4FB5-A5BA1C460E01583A_sc7
Staples Brand Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (570240/99294)~#|#~1DDEEC0B-AA88-4AF4-80F52C96DE579C95_sc7
Item # : 570240
Model # : ST570240-CC
Mail business and personal correspondence with confidence by using this 500-pack #10 self-sealing envelopes.
  • US #10 business envelopes are suitable for many mailing projects
  • Made from white 24 lb. paper for durability
Price is $30.69
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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Staples Tyvek EasyClose Catalog Envelopes, 9"L x 12"H, White, 100/Box (ST19873)~#|#~sp37069926_sc7
25% off of Staples Tyvek EasyClose Catalog Envelopes, 9"L x 12"H, White, 100/Box (ST19873)
Item # : 534909
Model # : ST19873
Send booklets, documents or small items with this 100-count box of Staples Tyvek 9 x 12-inch EasyClose catalog envelopes.
  • Tyvek Catalog envelopes are a comfortable choice for anyone in need of a slightly more spacious envelope option
  • White Tyvek envelope provides superior protection for mailing important materials or documents
Price is $87.97, Regular price was $117.29, You save 25%
Unit of measure 100/Box Price per unit $0.88/Envelope
Free Next-Day eligible by tomorrow
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Quality Park Redi-Seal Self Seal #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 250/Pack (24559-QP-250)~#|#~s1196808_sc7
Item # : 23995341
Model # : 24559-QP-250
Quality Park #10 Double Window Envelope (4 1/8" x 9 1/2") are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail
  • Comes in White Wove w/ Self-Seal
  • Dimensions: 4 1/8"L x 9 1/2"W
Price is $87.99
Unit of measure 250/Pack
Free delivery by Wed, Jul 02
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Staples Gummed Kraft Catalog Envelopes, 6.5" x 9.5", Brown, 100/Box (SPL534701)~#|#~s1224530_sc7
Staples Gummed Kraft Catalog Envelopes, 6.5" x 9.5", Brown, 100/Box (SPL534701)~#|#~s1224528_sc7
Item # : 534701
Model # : ST50162-CC
Transport vital documents securely with this 100-pack of Staples 6.5 x 9.5-inch brown kraft catalog envelopes.
  • Catalog envelopes are a convenient and reliable choice for personal and business mailing purposes
  • Comes in brown and made of kraft
Price is $33.99
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Quality Park Tyvek Self-Adhesive Envelope, #55, 14-lb., White, 6" x 9", 100/Bx~#|#~s0046157_sc7
Quality Park Tyvek Self-Adhesive Envelope, #55, 14-lb., White, 6" x 9", 100/Bx~#|#~s0171508_sc7
Item # : 827973
Model # : QUAR1320
  • Convenient Flap-Stik closure
  • Tyvek provides extra protection from punctures, tears and moisture
Price is $79.79
Unit of measure 100/Box
Free delivery by Thu, Jun 26
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Staples Open End Kraft Catalog Envelopes, 14"L x 18"H, Brown, 25/Pack (SPL195776)~#|#~s1224479_sc7
Staples Open End Kraft Catalog Envelopes, 14"L x 18"H, Brown, 25/Pack (SPL195776)~#|#~s1224538_sc7
Item # : 195776
Model # : ST50154-CC
Protect oversized documents with this 25-pack of Staples kraft jumbo 14 x 18-inch brown ungummed catalog envelopes.
  • Jumbo catalog envelopes for large documents
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $27.59
Unit of measure 25/Pack
Next-Day Delivery by tomorrow
1-hr pickup
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Staples EasyClose Catalog Envelopes, 10"L x 13"H, White, 250/Box (SPL479886)~#|#~s1224630_sc7
Staples EasyClose Catalog Envelopes, 10"L x 13"H, White, 250/Box (SPL479886)~#|#~s1224574_sc7
Item # : 479886
Model # : ST19785-CC
Mail documents securely with this 250-count box of 10 x 13-inch Staples EasyClose white wove catalog envelopes.
  • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
  • White paper shows labeling and writing clear and concise
Price is $52.59
Unit of measure 250/Box
Free Next-Day eligible by tomorrow
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Quality Park Redi-Seal Catalog Envelopes, 9" x 12", White, 100/Box (QUA43517)~#|#~sp46777866_sc7
Quality Park Redi-Seal Catalog Envelopes, 9" x 12", White, 100/Box (QUA43517)~#|#~sp46777865_sc7
Item # : 822734
Model # : QUA43517
Send bulk mailings out on schedule with these time-saving Quality Park Redi-Seal catalog envelopes.
  • Catalog envelopes are a convenient and reliable choice for personal and business mailing purposes
  • Made of paper and comes in white
Price is $38.69
Unit of measure 100/Box Price per unit $0.39/Envelope
Free Next-Day eligible by tomorrow
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Staples EasyClose Booklet Envelopes, 12"L x 9"H, White, 100/Box (SPL570227)~#|#~D91FE8E2-A849-43D5-BB3A997F6A88F5E6_sc7
Staples EasyClose Booklet Envelopes, 12"L x 9"H, White, 100/Box (SPL570227)~#|#~8A130193-3445-48A8-BF3E42EEEE242B50_sc7
Item # : 570227
Model # : ST19826-CC
Mail catalogs, brochures and other reading materials with these Staples EasyClose white 9 x 12-inch woven side-open booklet envelopes.
  • Envelopes are perfect for filing, mailing and storing important documents, and reports
  • White woven paper stock resists tearing
Price is $45.19
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 5" x 7.5", Brown Kraft, 100/Box (QUA37835)~#|#~sp42116471_sc7
Item # : 513235
Model # : QUA37835
Ship photos and other important documents safely with this box of 100 Quality Park brown gummed clasp envelopes.
  • Booklet envelopes are a comfortable choice for anyone in need of more spacious envelope option
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $43.69
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Staples Self Seal Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (534792/17105)~#|#~A86B21ED-0896-4E39-BB663E073DE71C05_sc7
Staples Self Seal Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (534792/17105)~#|#~0BC76007-45FC-4109-B59DF3B452E69A09_sc7
Item # : 534792
Model # : ST534792-CC
Mail marketing materials to clients or vendors with these Staples 7.5 x 10.5 kraft self-sealing catalog envelopes.
  • Catalog envelopes are perfect for catalogs, documents, and invoices
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $33.69
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Staples Self Seal #13 1/2 Kraft Catalog Envelope, 10" x 13", Brown, 250/Box (ST486933-CC)~#|#~s1224504_sc7
Staples Self Seal #13 1/2 Kraft Catalog Envelope, 10" x 13", Brown, 250/Box (ST486933-CC)~#|#~s1224575_sc7
Item # : 486933
Model # : ST486933-CC
Ensure correspondence arrives undamaged with this box of 250 Staples 10 x 13-inch brown kraft self-sealing catalog envelopes.
  • Catalog envelopes are perfect for catalogs, brochures, and documents
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $59.29
Unit of measure 250/Box
Free Next-Day eligible by tomorrow
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 12" x 15 1/2", Kraft, 100/Box (37810)~#|#~s0288241_sc7
Item # : 510664
Model # : QUA37810
Quality Park 12" x 15 1/2" Clasp envelope in brown color features a heavily gummed flap with sturdy metal clasp for secured seal.
  • 12" x 15-1/2"
  • Heavily gummed flap with sturdy, reusable metal clasp provides extra holding power
Price is $85.69
Unit of measure 100/Box Price per unit $0.86/Envelope
Free Next-Day eligible by tomorrow
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Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Brown, 100/Box (QUA63560)~#|#~sp43815062_sc7
Item # : 377354
Model # : QUA63560
Communicate throughout the office with these brown Quality Park string and button inter-department envelopes.
  • Simple high-quality catalog envelopes that get the job done
  • Envelope size: 13"H x 10"W
Price is $81.79
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Staples Clasp & Moistenable Glue Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (233577/19268)~#|#~1F6CA9AE-4431-4B82-BE0A70EC93B9BEC9_sc7
Staples Clasp & Moistenable Glue Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (233577/19268)~#|#~3CEE6796-5213-4286-8665B945B7DD262A_sc7
Item # : 233577
Model # : ST233577-CC
Keep documents secure with this 100-pack of Staples kraft 7.5 x 10.5-inch brown clasp envelopes.
  • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $32.19
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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JAM Paper® Plastic Envelopes with Elastic Band Closure, Letter Size, Assorted Colors, 6/Pack (218E25BGOPFUCL)~#|#~sp42124790_sc7
JAM Paper® Plastic Envelopes with Elastic Band Closure, Letter Size, Assorted Colors, 6/Pack (218E25BGOPFUCL)~#|#~sp42124789_sc7
Item # : 1588431
Model # : 218E25BGOPFUCL
Protect and transport documents with this six-count package of JAM Paper assorted-color elastic-closure plastic letter booklet envelopes.
  • Made of plastic in assorted colors with a smooth finish
  • Letter size to keep all standard-size documents and files organized and protected
Price is $34.69
Unit of measure 6/Pack Price per unit $5.78/Envelope
Delivery by Fri, Jun 27
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Staples Gummed Catalog Envelopes, 9"L x 12"H, White, 100/Box (50264/47286N)~#|#~C5E12C4F-C941-437B-A9E0035CB1DA97F9_sc7
Staples Gummed Catalog Envelopes, 9"L x 12"H, White, 100/Box (50264/47286N)~#|#~864F4B23-2902-48C7-879B2ADB6A4399B8_sc7
Item # : 472886
Model # : ST472886N-CC
Transport documents securely with this 100-count box of Staples 9 x 12-inch white wove gummed-flap catalog envelopes.
  • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
  • White paper shows labeling and writing clear and concise
Price is $43.09
Unit of measure 100/Box Price per unit $0.43/Envelope
Free Next-Day eligible by tomorrow
1-hr pickup
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Gummed Catalog Envelopes, 10"L x 13"H, White, 250/Box (486954/17040)~#|#~s1224523_sc7
Gummed Catalog Envelopes, 10"L x 13"H, White, 250/Box (486954/17040)~#|#~s1224524_sc7
Item # : 486954
Model # : ST59962-CC
Ship business documents or publications with this 250-count box of Staples 10 x 13-inch white woven catalog envelopes.
  • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
  • White paper shows labeling and writing clear and concise
Price is $58.49
Unit of measure 250/Box
Free Next-Day eligible by tomorrow
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Staples Gummed Kraft Catalog Envelopes, 9"L x 12"H, Brown, 250/Box (486940/17032)~#|#~s1224584_sc7
Staples Gummed Kraft Catalog Envelopes, 9"L x 12"H, Brown, 250/Box (486940/17032)~#|#~s1224512_sc7
Item # : 486940
Model # : ST486940-CC
Keep stacks of documents in good condition with this 250-pack of Staples 9 x 12-inch brown kraft catalog envelopes.
  • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
  • Made from brown kraft paper that conceals contents
Price is $53.79
Unit of measure 250/Box
Free Next-Day eligible by tomorrow
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Staples Self Seal Kraft Catalog Envelopes, 6” x 9”, Brown, 100/Box (50262)~#|#~s1224544_sc7
Staples Self Seal Kraft Catalog Envelopes, 6” x 9”, Brown, 100/Box (50262)~#|#~s1224543_sc7
Item # : 381964
Model # : ST50262-CC
Mail brochures and catalogs without bending them using this 100-pack of Staples brown kraft 6 x 9-inch self-sealing catalog envelopes.
  • Catalog envelopes are a convenient and reliable choice for personal and business mailing purposes
  • Comes in brown and made of kraft
Price is $29.19
Unit of measure 100/Box Price per unit $0.29/Envelope
Next-Day Delivery by tomorrow
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Staples Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (21571)~#|#~2BCC85DC-6F27-4BEF-B606BC5C93B925E3_sc7
Staples Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (21571)~#|#~4377B21E-23BF-41CC-85D64F7A218A7986_sc7
Item # : 329850
Model # : ST21571-CC
Make shipping marketing materials easy with these Staples 10 x 13-inch white tear-resistant catalog envelopes.
  • Catalog envelopes are perfect for catalogs, brochures, and leaflets
  • Durable, lightweight, and tear-resistant 10gsm woven paper.
Price is $86.09
Unit of measure 100/Box Price per unit $0.86/Envelope
Free Next-Day eligible by tomorrow
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Quality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (24559-QP-50)~#|#~sp5822112_sc7
Quality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (24559-QP-50)~#|#~sp5875503_sc7
Item # : 23996473
Model # : 24559-QP-50
Quality Park #10 Double Window Envelope (4 1/8 x 9 1/2) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail
  • #10 Double window business envelope
  • Dimensions: 4.125"L x 9.5"W
Price is $41.59
Unit of measure 50/Pack
Free delivery by Wed, Jul 02
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JAM Paper Open End Catalog Envelope, 6" x 9", White, 25/Pack (1623192)~#|#~sp111772487_sc7
JAM Paper Open End Catalog Envelope, 6" x 9", White, 25/Pack (1623192)~#|#~sp111772486_sc7
Item # : 366643
Model # : 1623192
  • Size: 6" x 9"
  • Gummed closure with straight flap
Price is $9.39
Unit of measure 25/Pack
Delivery by Fri, Jun 27
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Staples Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Brown, 250/Box (486931/14245)~#|#~s1224510_sc7
Staples Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Brown, 250/Box (486931/14245)~#|#~s1224508_sc7
Item # : 486931
Model # : ST486931-CC
Ship catalogs and documents with this 250-count box of Staples 9 x 12-inch kraft self-sealing catalog envelopes.
  • Catalog envelopes are perfect for catalogs, brochures, and documents
  • Made from brown kraft paper that conceals contents from prying eyes
Price is $69.99
Unit of measure 250/Box Price per unit $0.28/Envelope
Free Next-Day eligible by tomorrow
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Trending now

There is something about a square flap on an envelope that denotes importance. It is no wonder then that many significant invitations and announcements are packaged in just such a wrapper. But don't make the mistake of thinking these classic mailers are just for personal use. Businesses can make a similar statement by choosing a square-flapped envelope, with or without a clear window. Peruse the dozens of options available from leading office supply brands like JAM Paper, LUX, and Staples.

Narrow Your Choices
Selecting a business envelope can be more daunting than you think. While it is nice to have choices, narrowing them down can be difficult. Square-flapped envelopes are available in dimensions ranging from 3 1/2" x 6" (the smallest commercial size available) to jumbo 13" x 19" mailers and everything in between, including the standard #10 envelope. As for color? Depending on your needs, 17 different color choices beckon, some with address windows, some without.

Not Quite Done Yet
You've determined your specific needs when it comes to color and size in a square-flapped envelope, but you're not quite done yet. Depending on what you are mailing, you may or may not need clear address windows. If you do need a window, how many and where should they be? Single left, single right, and double left windows are the most popular choices but not the only ones. A full-faced over-sized clear center window is also an option for special mailing projects.

Almost There
It should be apparent by now that the "one size fits all" days of business envelopes are long gone. As are the days when licking or using a sponge to seal them was the only choice. Yes, the old-school sealants are still available, but many other options are, too. Choose redi-seal strips that require no moisture or convenient peel-and-stick closures. Now that you have chosen your square envelope, purchase in packs of as few as 20 or as many as 1,000.