Square Envelopes
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Envelope Type
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Envelope Number
Envelope Material
Item # : 366163
Model # : 4023222
JAM Paper® Booklet envelope measuring 10" x 13" can be used to send all kinds of promotional mail comes in white color and is sold as 25 per pack.
- Size: 10" x 13"
- Gummed closure with straight flap
Price is $14.49
Unit of measure 25/Pack
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Over 30
Item # : 70505
Model # : QUAR2420
Ship fragile, important documents securely with this pack of Quality Park Survivor self-adhesive Flap-Stik Tyvek mailer envelopes
- 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
Price is $219.59
Unit of measure 100/Box
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Over 30
Item # : 261226
Model # : 95666
JAM Paper® A7 Size brite hue orange recycled paper invitation envelope in a pack of 25 has dimension of 5 1/4 x 7 1/4" and is perfect for greeting cards, invitations or other announcements.
- Size: A7 (5 1/4" x 7 1/4")
- Closure: Gum
Price is $11.19
Unit of measure 25/Pack
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Over 30
Item # : 281925
Model # : 5360-07-50
Lux® Size 10 square flap envelope in gold metallic color is ideal for different types of personal or business related uses and measures 4 1/8" x 9 1/2".
- #10 Square Flap Envelopes are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
- Comes in Gold Metallic, 80lb. Text Paper
Price is $41.89
Unit of measure 50/Pack
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Over 30
Item # : 2633172
Model # : 1623989I
Classic, clean and professional these white and manila envelopes will make all of your simple mailings stay that way.
- Windowless design
- Made from smooth, 24-lb cotton fiber paper
Price is $11.19
Unit of measure 50/Pack
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Item # : 24261142
Model # : INVDW-500
LUX Double Window Invoice Envelopes (4 1/8 x 9 1/8) in White w/ Peel & Seel are perfect for mailing Checks/Invoices/Letterhead/Personal Letters/Statements/Direct Mail, sold as 500 per box.
- Dimensions: 4.125"L x 9.125"W
- Comes in White w/ Peel & Seel®
Price is $188.09
Unit of measure 500/Pack
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Item # : 365874
Model # : 31820
JAM Paper® A6 Size envelope measuring 4 3/8" x 5 3/4" is perfectly sized for everyday business correspondence, comes in regular white color an is sold as 25 per pack.
- Size: A6 (4 3/4" x 6 1/2")
- Gummed closure with straight flap
Price is $9.69
Unit of measure 25/Pack
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Item # : 262992
Model # : 219B1CL
Keep essential papers and small items safe with this 12-pack of JAM Paper legal-size clear poly button-and-string-tie-closure envelopes.
- Made of clear plastic with a smooth finish
- Holds legal-size documents and files
Price is $42.49
Unit of measure 12/Pack Price per unit $3.54/Envelope
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Item # : 479889
Model # : ST479889-CC
Mail catalogs and documents with this 250-count box of Staples EasyClose 10 x 13-inch kraft catalog envelopes.
- Catalog envelopes are perfect for catalogs, statements, and invoices
- Made from brown kraft paper that conceals contents from prying eyes
Price is $69.29
Unit of measure 250/Box
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Item # : 1589160
Model # : LEKR700I
The JAM Paper A7 brown kraft paper bag recycled envelope is an ideal medium to send your cordial invitations for a wide variety of occasions.
- Brown Kraft paper bag recycled envelope
- Blank interior for personalized message
Price is $23.89
Unit of measure 50/Pack
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Over 30
Item # : 534776
Model # : ST19821
Keep magazines, reports and invoices clean and neat by using this 100-pack of Staples kraft 11.5 x 14.5-inch brown 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 $53.69
Unit of measure 100/Box
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Item # : 1589525
Model # : 15945I
The JAM Paper A7 red recycled envelope comes with an apt color and finish to make it perfect for your party invitations and greeting cards.
- Red recycled envelope
- Blank interior for personalized message
Price is $15.49
Unit of measure 50/Pack
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Item # : 377518
Model # : QUA37763
Quality Park 6 1/2" x 9 1/2" Clasp envelope in brown color features a heavily gummed flap with sturdy metal clasp for secured seal.
- Heavily gummed flap with sturdy, reusable metal clasp provides extra holding power
- Extra-heavyweight stock is ideal for heavy or bulky mailings
Price is $38.69
Unit of measure 100/Box
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Item # : 24260287
Model # : 8525-80W-50
LUX 6 x 6 Square Envelopes in 80lb. Bright White are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 6"L x 6"W
- Comes in 80lb. Bright White
Price is $16.19
Unit of measure 50/Pack
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Item # : 23995432
Model # : 24559-QP-500
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: 4.125"L x 9.5"W
Price is $131.99
Unit of measure 500/Pack
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Item # : 24260257
Model # : 8250-50
LUX 9 x 12 Open End Envelopes in 28lb. Bright White are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 9"L x 12"W
- Comes in 28lb. Bright White
Price is $21.09
Unit of measure 50/Pack
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Item # : 827898
Model # : QUA50160
Contain small parts with this 500-pack of Quality Park 2 1/4" x 3 1/2" side seam #1 light brown gummed kraft coin and small parts envelopes.
- Coin and small parts envelopes with gummed flap for home or office use
- Envelope size: 2 1/4"W x 3 1/2"L
Price is $43.09
Unit of measure 500/Box
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Item # : 122726
Model # : ST23425-CC
Give color to outgoing mail with this 50-pack of Staples EasyClose 4-1/8" x 9-1/2" assorted-color #10 envelopes.
- US #10 business envelopes are suitable for many mailing projects
- The assortment of colors allows you to color-code or simply add some color to mailings
Price is $11.19
Unit of measure 50/Pack
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Item # : 2329428
Model # : 216313691H
JAM Paper Money Envelopes are ideal for mailing and keeping cash, checks, and more!
- This envelope is made of high quality 28lb paper has a flap, commercial closure, and a smooth finish
- Perfect for mail, personal business correspondence, greeting cards, announcements, and more
Price is $16.99
Unit of measure 50/Pack
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Item # : 24261231
Model # : FFW-912-50
LUX 9 x 12 Full Face Window Envelopes in 28lb. Bright White are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 9"L x 12"W
- Comes in 28lb. Bright White
Price is $40.39
Unit of measure 50/Pack
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Item # : 23995955
Model # : 24539-50
Quality Park #8 5/8 Double Window Envelope (3 5/8 x 8 5/8) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail
- Comes in White Wove w/ Self-Seal
- Dimensions: 3.625"L x 8.625"W
Price is $58.19
Unit of measure 50/Pack
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Item # : 1433904
Model # : 1251501
Jam® Letter open end envelope in yellow color comes with button and string closure for convenience and is perfect for holding important documents, sold as 12 per pack.
- Closure: Button string tie
- Opening: Booklet
Price is $32.79
Unit of measure 12/Pack Price per unit $2.73/Envelope
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Item # : 2329361
Model # : 356731206C
Classic, clean and professional these white and manila envelopes will make all of your simple mailings stay that way.
- Straight flap with gummed closure and smooth paper finish
- Perfect for personal mail, business mailings, greeting cards, announcements, and so much more
Price is $10.09
Unit of measure 50/Pack
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Item # : 282796
Model # : 4880-SN-50
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 100% Cotton are perfect for Invitations, Weddings, Announcements, Photos, and so much more!
- A7 Invitation Envelopes (5 1/4 x 7 1/4) 100% Cotton are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos
- Comes in Natural White - 100% Cotton, 80lb. Text Paper
Price is $47.19
Unit of measure 50/Pack
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Item # : 2146323
Model # : 512CO-28W-50
LUX #5 1/2 Coin Envelopes (3 1/8 x 5 1/2) are great for storing small parts, such like: coins, jewelry, stamps, seeds, SD memory cards, resistors capacitors and all other kind of small electronic parts.
- #5 1/2 Coin Envelopes (3 1/8 x 5 1/2) are perfect for storing and transferring of coins/jewelry/stamps/small objects/parts/materials
- Comes in 28lb. White, 28lb. Text Paper
Price is $28.69
Unit of measure 50/Pack
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Over 30
Item # : 813480
Model # : QUA37894
Keep invoices, contracts, and other documents secure while in transit with this box of 100 Quality Park brown gummed clasp envelopes.
- Catalog envelopes are a convenient and reliable choice for personal and business mailing purposes
- Made from brown kraft paper that conceals contents from prying eyes
Price is $61.99
Unit of measure 100/Box
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Over 30
Item # : 366674
Model # : 1623193
JAM Paper® Open end envelope measuring 6 1/2" x 9 1/2" is perfectly sized for business correspondence, comes in white color and is sold as 25 per pack.
- Size: 6 1/2" x 9 1/2"
- Gummed closure with straight flap
Price is $9.39
Unit of measure 25/Pack
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Item # : 507902
Model # : QUA42355
Ship with confidence by using this box of 25 Quality Park open-end brown jumbo envelopes.
- Jumbo envelope is used for sending flat, heavy materials or many small items like coins and catalogs
- Kraft paper in brown color provides durability
Price is $40.79
Unit of measure 25/Box
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Item # : 24261228
Model # : 5380-M07-50
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) in Blonde Metallic are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 5.25"L x 7.25"W
- Comes in Blonde Metallic
Price is $24.39
Unit of measure 50/Pack
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Item # : 2598542
Model # : QUA64015
Store photos and important documents with these Quality Park recycled extra-rigid fiberboard white photo and document mailers.
- Simple high-quality document envelopes for mailing and storing important documents
- Envelope size: 9.75"W x 12.5"H
Price is $53.59
Unit of measure 25/Box
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Item # : 366523
Model # : 49856
JAM Paper® Size 10 Policy envelope measuring 4 1/8" x 9 1/2" is perfectly sized for everyday business correspondence, comes in regular white color and is sold as 25 per pack.
- Size: #10 (4-1/8" x 9-1/2")
- Gummed closure with straight flap
Price is $9.39
Unit of measure 25/Pack
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Item # : 24295087
Model # : 13034229C
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.
- This open end envelope is lightweight paper and has no clasp for minimal fuss
- The flap includes a peel and seal enclosure to ensure that the envelope stays closed and contents stay safe
Price is $187.09
Unit of measure 500/Pack
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Item # : 24260280
Model # : 7486-W2-250
LUX W-2 / 1099 Envelopes (5 3/4 x 8 7/8) in 24lb. White w/ Security Tint are perfect for mailing Checks, Invoices, Letterhead, Personal Letters, Statements, Direct Mail and more!
- Dimensions: 5.75"L x 8.875"W
- Comes in 24lb. White w/ Security Tint
Price is $114.49
Unit of measure 250/Pack
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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.
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.