Sponsored Products
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Square Envelopes

Staples Gummed Kraft Catalog Envelopes, 11.5" x 14.5", Brown, 100/Box (SPL534776)~#|#~07B1025A-E228-49F9-83E5FEA57476680B_sc7Staples Gummed Kraft Catalog Envelopes, 11.5" x 14.5", Brown, 100/Box (SPL534776)~#|#~E43F2E37-C7A7-4707-9683CF1C4398A9B5_sc7
Item: 534776
Model: ST19821
Price is $56.49
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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Staples Gummed Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (534719/17095)~#|#~s1225277_sc7Staples Gummed Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (534719/17095)~#|#~s1225276_sc7
Item: 534719
Model: ST534719-CC
Price is $32.49
Unit of measure 100/Box
Delivery by Tue, Apr 28
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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
Price is $83.89
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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JAM Paper Open End Kraft Catalog Envelope, 5 1/2" x 7 1/2", Brown, 25/Pack (4101)~#|#~sp111772307_sc7JAM Paper Open End Kraft Catalog Envelope, 5 1/2" x 7 1/2", Brown, 25/Pack (4101)~#|#~sp111772306_sc7
Item: 366625
Model: 4101
Price is $9.59
Unit of measure 25/Pack
Delivery by Mon, May 04
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Quality Park Tyvek Flap-Stik Self Seal #98 Catalog Envelope, 10" x 15", White, 100/Box (R1660)~#|#~s0293060_sc7Quality Park Tyvek Flap-Stik Self Seal #98 Catalog Envelope, 10" x 15", White, 100/Box (R1660)~#|#~s0171519_sc7
Item: 827946
Model: QUAR1660
Price is $139.39
Unit of measure 100/Box
Free delivery by Wed, Apr 29
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JAM Paper Catalog Envelope 9" x 12", White, 25/Pack (1623197)~#|#~sp111772495_sc7JAM Paper Catalog Envelope 9" x 12", White, 25/Pack (1623197)~#|#~sp111772494_sc7
Item: 366693
Model: 1623197
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, May 04
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Quality Park Ship-Lite First Class Tyvek Catalog Envelopes, 9x12"~#|#~s0293146_sc7
Item: 456561
Model: QUAS3615
No reviews yet
Price is $120.79
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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LUX Peel & Seel Self Seal #10 Window Envelope, 4 1/2" x 9 1/2", White, 50/Pack (75761-50)~#|#~sp14807363_sc7
Item: 24260686
Model: 75761-50
Price is $26.09
Unit of measure 50/Pack
Delivery by Wed, May 06
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JAM Paper #15 1/2 Catalog Envelope, 12" x 15 1/2", Brown Kraft, 100/Pack (900493255)~#|#~sp111772336_sc7JAM Paper #15 1/2 Catalog Envelope, 12" x 15 1/2", Brown Kraft, 100/Pack (900493255)~#|#~sp111772335_sc7
Item: 24365023
Model: 900493255
Price is $56.49
Unit of measure 100/Pack
Free delivery by Mon, May 04
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Staples Self Seal Catalog Envelopes, 9"L x 12"H, White, 100/Box (19295VP)~#|#~s1224468_sc7Staples Self Seal Catalog Envelopes, 9"L x 12"H, White, 100/Box (19295VP)~#|#~s1224470_sc7
Item: 260612
Model: ST19295VP-CC
Price is $53.09
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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JAM Paper 10" x 13" Open End Catalog Envelopes, White, 25/Pack (1623199)~#|#~sp111772499_sc7JAM Paper 10" x 13" Open End Catalog Envelopes, White, 25/Pack (1623199)~#|#~sp111772498_sc7
Item: 366708
Model: 1623199
Price is $17.09
Unit of measure 25/Pack
Delivery by Mon, May 04
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Quality Park Open End Kraft Catalog Envelopes, 12.5 x 18.5", Brown Kraft, 25/Box (QUA42353)~#|#~sp42804713_sc7Quality Park Open End Kraft Catalog Envelopes, 12.5 x 18.5", Brown Kraft, 25/Box (QUA42353)~#|#~sp42804712_sc7
Item: 377340
Model: QUA42353
Price is $28.19
Unit of measure 25/Pack
Delivery by Tue, Apr 28
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JAM PAPER Self Seal Catalog Envelopes, 5 1/2" x 7 1/2", Brown Kraft Manila, 100/Pack (400238465D)~#|#~26730DBE-54FB-4539-848979245847A148_sc7JAM PAPER Self Seal Catalog Envelopes, 5 1/2" x 7 1/2", Brown Kraft Manila, 100/Pack (400238465D)~#|#~0A04909B-0406-4C3A-9948FA2FFBCA1358_sc7
Item: 24557954
Model: 400238465D
Price is $28.29
Unit of measure 100/Pack
Delivery by Mon, May 04
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JAM Paper #6 Kraft Coin Business Envelopes, 3.375 x 6, Brown Kraft Manila, 50/Pack (1623992i)~#|#~sp111772366_sc7JAM Paper #6 Kraft Coin Business Envelopes, 3.375 x 6, Brown Kraft Manila, 50/Pack (1623992i)~#|#~sp111772506_sc7
Item: 2633117
Model: 1623992I
Price is $14.89
Unit of measure 50/Pack
Delivery by Mon, May 04
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Size, Clear, 12/Pack (218B1CL)~#|#~sp42125182_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Size, Clear, 12/Pack (218B1CL)~#|#~sp42125181_sc7
Item: 263017
Model: 218B1CL
Price is $36.89
Unit of measure 12/Pack Price per unit $3.07/Envelope
Free delivery by Mon, May 04
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Quality Park Survivor Tyvek Expansion Self Seal Catalog Envelopes, 10" x 13", White, 100/Carton (QUAR4500)~#|#~sp49508228_sc7Quality Park Survivor Tyvek Expansion Self Seal Catalog Envelopes, 10" x 13", White, 100/Carton (QUAR4500)~#|#~sp49508227_sc7
Item: 892986
Model: QUAR4500
Price is $242.29
Unit of measure 100/Carton
Free delivery by Tue, Apr 28
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, 24lb. Bright White (72940-50)~#|#~m000081996_sc7
Item: 282721
Model: 72940-50
Price is $26.09
Unit of measure 50/Pack
Delivery by Wed, May 06
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JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238)~#|#~sp124925524_sc7JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238)~#|#~sp124925523_sc7
Item: 366031
Model: 4238
Price is $13.59
Unit of measure 25/Pack
Delivery by Mon, May 04
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Pendaflex Plastic Button & String Booklet Envelope, Clear, 8 1/2" x 14", 3/Pack (63814-3)~#|#~m002293941_sc7
Item: 2623281
Model: 63814-3
Price is $15.39
Unit of measure 3/Pack Price per unit $5.13/Envelope
Delivery by Tue, Apr 28
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Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132158_sc7Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132157_sc7
Item: 507690
Model: QUA11218
Price is $101.59
Unit of measure 500/Box
Free delivery by Tue, Apr 28
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JAM Paper A10 Invitation Envelope, 6" x 9 1/2", White, 1000/Carton (12039B)~#|#~sp115352023_sc7JAM Paper A10 Invitation Envelope, 6" x 9 1/2", White, 1000/Carton (12039B)~#|#~sp115352019_sc7
Item: 366314
Model: 12039B
Price is $212.89
Unit of measure 1000/Carton
Free delivery by Mon, May 04
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Staples Clasp & Moistenable Glue Kraft Catalog Envelope, 11 1/2" x 14 1/2", Brown, 100/Box (ST17748-CC)~#|#~s1223345_sc7Staples Clasp & Moistenable Glue Kraft Catalog Envelope, 11 1/2" x 14 1/2", Brown, 100/Box (ST17748-CC)~#|#~s1223341_sc7
Item: 535039
Model: ST17748-CC
Price is $67.19
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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JAM Paper #3 Kraft Coin Envelope, 2 1/2" x 4 1/4", Brown Kraft, 50/Pack (1623989I)~#|#~sp77468249_sc7JAM Paper #3 Kraft Coin Envelope, 2 1/2" x 4 1/4", Brown Kraft, 50/Pack (1623989I)~#|#~sp77468248_sc7
Item: 2633172
Model: 1623989I
Price is $11.49
Unit of measure 50/Pack
Delivery by Mon, May 04
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Staples Tyvek EasyClose Catalog Envelopes, 16"L x 12"H, White, 50/Box (ST19868-CC)~#|#~sp37069921_sc7
Item: 534644
Model: ST19868-CC
Price is $192.39
Unit of measure 50/Box
Free delivery by Tue, Apr 28
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Quality Park Tyvek Self-Adhesive Envelope, #55, 14-lb., White, 6" x 9", 100/Bx~#|#~s0046157_sc7Quality Park Tyvek Self-Adhesive Envelope, #55, 14-lb., White, 6" x 9", 100/Bx~#|#~s0171508_sc7
Item: 827973
Model: QUAR1320
Price is $81.79
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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Staples Self Seal Kraft Catalog Envelopes, 9.5"L x 12.5"H, Brown, 100/Box (SPL381962)~#|#~94015978-EB59-48E9-925D68D69797573C_sc7Staples Self Seal Kraft Catalog Envelopes, 9.5"L x 12.5"H, Brown, 100/Box (SPL381962)~#|#~D9CAA66C-45D5-4A57-A2F5FDAFD57FCD32_sc7
Item: 381962
Model: ST50195
Price is $46.89
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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LUX 9 x 12 Kraft Open End Envelopes 500/Pack, 24lb. Brown Kraft (8383-500)~#|#~sp14807490_sc7
Item: 24260723
Model: 8383-500
No reviews yet
Price is $64.99
Unit of measure 500/Pack
Free delivery by Wed, May 06
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Quality Park Redi-Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA11118)~#|#~sp40286632_sc7Quality Park Redi-Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA11118)~#|#~sp40286631_sc7
Item: 458291
Model: QUA11118
Price is $78.99
Unit of measure 500/Box
Free delivery by Tue, Apr 28
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Quality Park Gummed Open-End Catalog Envelopes, 9" x 12", Brown, 100/Bx (QUA41467)~#|#~s0293042_sc7Quality Park Gummed Open-End Catalog Envelopes, 9" x 12", Brown, 100/Bx (QUA41467)~#|#~s0171313_sc7
Item: QUA41467
Model: QUA41467
Price is $26.99
Unit of measure Box
Delivery by Wed, Apr 29
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Open End, 9.75 x 11.75, Bright Orange, 12/Pack (1221560)~#|#~m005745016_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Open End, 9.75 x 11.75, Bright Orange, 12/Pack (1221560)~#|#~m005745015_sc7
Item: 263046
Model: 1221560
No reviews yet
Price is $32.39
Unit of measure 12/Pack Price per unit $2.70/Envelope
Delivery by Mon, May 04
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JAM Paper® Plastic Envelopes with Hook & Loop Closure, Letter Size, Clear, 12/Pack (218V0CL)~#|#~sp42125171_sc7JAM Paper® Plastic Envelopes with Hook & Loop Closure, Letter Size, Clear, 12/Pack (218V0CL)~#|#~sp42125170_sc7
Item: 263525
Model: 218V0CL
Price is $38.29
Unit of measure 12/Pack Price per unit $3.19/Envelope
Free delivery by Mon, May 04
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, White, 25/Pack (4023981)~#|#~sp121512191_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, White, 25/Pack (4023981)~#|#~sp121512190_sc7
Item: 365989
Model: 4023981
Price is $9.89
Unit of measure 25/Pack
Delivery by Mon, May 04
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LUX Self Seal Catalog Envelope, 9 1/2" x 12 1/2", White, 50/Pack (75894-50)~#|#~37FED668-52B2-453D-9C7C582EB211B7C8_sc7
Item: 24260751
Model: 75894-50
Price is $73.29
Unit of measure 50/Pack
Free delivery by Wed, May 06
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Quality Park Redi-Seal Catalog Envelope, 6" x 9", White, 100/Box (43117)~#|#~s0171342_sc7
Item: 507910
Model: QUA43117
Price is $28.29
Unit of measure 100/Box
Delivery by Tue, Apr 28
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Staples Self Seal Catalog Envelopes, 12" x 15.5", White, 100/Box (609123/73142)~#|#~222A2E50-FD44-4AA9-A348097CFAF63B66_sc7Staples Self Seal Catalog Envelopes, 12" x 15.5", White, 100/Box (609123/73142)~#|#~3F280CCA-0192-4AC5-ABDE8803F67EC0C3_sc7
Item: 609123
Model: ST609123-CC
Price is $39.29
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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Quality Park Redi-Seal Self Seal Security Tinted #9 Double Window Envelope, 3 7/8" x 8 7/8", White Wove, 1000/Pack (24529-1000)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal Security Tinted #9 Double Window Envelope, 3 7/8" x 8 7/8", White Wove, 1000/Pack (24529-1000)~#|#~s1196808_sc7
Item: 23996113
Model: 24529-1000
Price is $225.49
Unit of measure 1000/Pack
Free delivery by Wed, May 06
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JAM Paper Open End Catalog Envelope, 6" x 9", White, 50/Pack (1623192I)~#|#~sp111772487_sc7JAM Paper Open End Catalog Envelope, 6" x 9", White, 50/Pack (1623192I)~#|#~sp111772486_sc7
Item: 24052394
Model: 1623192I
Price is $15.29
Unit of measure 50/Pack
Delivery by Mon, May 04
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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.