Square Envelopes

LUX 28lbs. 11" x 17" Open End Flap Jumbo Envelopes, Bright White, 500/BX~#|#~m000161319_sc7
Item: 385905
Model: 85923-500
No reviews yet
Price is $297.99
Unit of measure 500/Box
Free delivery by Tue, May 12
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JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i)~#|#~sp11854810_sc7JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i)~#|#~sp11854809_sc7
Item: 24145250
Model: 356828781I
No reviews yet
Price is $37.19
Unit of measure 50/Pack
Free delivery by Fri, May 08
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural w/Red LUX Lining (FLNT4880-01-50)~#|#~m000082054_sc7
Item: 282795
Model: FLNT4880-01-50
Price is $20.29
Unit of measure 50/Pack
Delivery by Tue, May 12
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JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Natural White Wove, 25/Pack (34992)~#|#~m007159127_sc7JAM Paper Strathmore #10 Business Envelope, 4 1/8" x 9 1/2", Natural White Wove, 25/Pack (34992)~#|#~m007159126_sc7
Item: 262547
Model: 34992
No reviews yet
Price is $20.49
Unit of measure 25/Pack
Delivery by Fri, May 08
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JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, 25/Pack (356730562)~#|#~m003757874_sc7JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, 25/Pack (356730562)~#|#~m003562859_sc7
Item: 2103396
Model: 356730562
No reviews yet
Price is $9.99
Unit of measure 25/Pack
Delivery by Fri, May 08
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JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 50/Pack (356730549I)~#|#~m003757871_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 50/Pack (356730549I)~#|#~m003562857_sc7
Item: 2329357
Model: 356730549I
No reviews yet
Price is $20.39
Unit of measure 50/Pack
Delivery by Fri, May 08
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JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, 100/Pack (356730562B)~#|#~m003757874_sc7JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, 100/Pack (356730562B)~#|#~m003562859_sc7
Item: 2103386
Model: 356730562B
No reviews yet
Price is $35.49
Unit of measure 100/Pack
Free delivery by Fri, May 08
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes W/Glue, Garnet Red, 250/BX~#|#~m000081272_sc7
Item: 386983
Model: EX7716-26-250
No reviews yet
Price is $117.39
Unit of measure 250/Box
Free delivery by Tue, May 12
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JAM Paper A6 Square Flap Envelopes, Peel & Press, 60lb, 4 3/4 x 6 1/2, Bright Blue, 50 Pack (4875-13-50)~#|#~sp228873495_sc7
Item: 24578389
Model: 4875-13-50
Price is $20.49
Unit of measure 50/Pack
Delivery by Fri, May 08
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Quality Park Redi-Seal Kraft Catalog Envelope, 12" x 15 1/2", Kraft, 250/Box (44062)~#|#~s0171359_sc7
Item: 377347
Model: QUA44062
No reviews yet
Price is $177.89
Unit of measure 250/Box
Free delivery by Tue, May 05
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Quality Park Kraft Document Envelope, 9" x 12", Brown Kraft, 100/Box, 5 Boxes/Carton (QUA37890CT)~#|#~sp131393128_sc7Quality Park Kraft Document Envelope, 9" x 12", Brown Kraft, 100/Box, 5 Boxes/Carton (QUA37890CT)~#|#~sp131393025_sc7
Quality Park Kraft Document Envelope, 9" x 12", Brown Kraft, 100/Box, 5 Boxes/Carton (QUA37890CT) is Out of stock
Item: 24489912
Model: QUA37890CT
Price is $135.29
Unit of measure 500/Carton
Staples Tyvek EasyClose Catalog Envelopes, 12"L x 16"H, White, 100/Box (SPL534875)~#|#~sp37069924_sc7
Staples Tyvek EasyClose Catalog Envelopes, 12"L x 16"H, White, 100/Box (SPL534875) is Out of stock
Item: 534875
Model: ST19877
Price is $133.59
Unit of measure 100/Box
Quality Park Kraft #3 Envelope 2 1/2" x 4 1/4", Brown, 500/Box (QUA50260)~#|#~sp46039391_sc7Quality Park Kraft #3 Envelope 2 1/2" x 4 1/4", Brown, 500/Box (QUA50260)~#|#~sp46039389_sc7
Quality Park Kraft #3 Envelope 2 1/2" x 4 1/4", Brown, 500/Box (QUA50260) is Out of stock
Item: 827906
Model: QUA50260
No reviews yet
Unit of measure 500/Box
Quality Park Ship-Lite Tyvek Open End Catalog Envelope, 10" x 13", White, 100/Box (QUAS3620)~#|#~s0298650_sc7
Quality Park Ship-Lite Tyvek Open End Catalog Envelope, 10" x 13", White, 100/Box (QUAS3620) is Out of stock
Item: 456563
Model: QUAS3620
Price is $55.49
Unit of measure 100/Box
Quality Park Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Kraft, 25/Box (QUA93334)~#|#~sp44343614_sc7Quality Park Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Kraft, 25/Box (QUA93334)~#|#~sp44343613_sc7
Quality Park Self Seal Kraft Catalog Envelopes, 9"L x 12"H, Kraft, 25/Box (QUA93334) is Out of stock
Item: 445595
Model: QUA93334
Price is $101.49
Unit of measure 25/Box
Staples Poly Button & String Document Envelopes, Letter Size, Assorted Colors, 5/Pack (10780)~#|#~sp44489318_sc7Staples Poly Button & String Document Envelopes, Letter Size, Assorted Colors, 5/Pack (10780)~#|#~sp44489316_sc7
Staples Poly Button & String Document Envelopes, Letter Size, Assorted Colors, 5/Pack (10780) is Out of stock
Item: 906370
Model: 999999
Price is $13.69
Unit of measure 5/Pack Price per unit $2.74/Envelope
Quality Park Booklet Envelope 4 3/4" x 6 1/2", White, 100/Box (QUA36417)~#|#~s0198925_sc7
Quality Park Booklet Envelope 4 3/4" x 6 1/2", White, 100/Box (QUA36417) is Out of stock
Item: 507771
Model: QUA36417
Price is $52.69
Unit of measure 100/Box
Staples Tyvek EasyClose Catalog Expansion Envelopes, 10"L x 13"H x 1-1/2W", White, 100/Box (SPL534859)~#|#~sp37069924_sc7
Staples Tyvek EasyClose Catalog Expansion Envelopes, 10"L x 13"H x 1-1/2W", White, 100/Box (SPL534859) is Out of stock
Item: 534859
Model: ST19876-CC
Price is $88.29
Unit of measure 100/Box
Staples EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Assorted Pastels, 50/Pack (23425)~#|#~F617DB9B-D86F-4FB4-899F0A89BF9431E4_sc7Staples EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Assorted Pastels, 50/Pack (23425)~#|#~E297209E-D18F-48EC-A2F309CDC7163A52_sc7
Staples EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Assorted Pastels, 50/Pack (23425) is Out of stock
Item: 122726
Model: ST23425-CC
Price is $11.79
Unit of measure 50/Pack
LUX CD (7 1/4 x 8) LUX Kraft Bubble Mailer 250/Pack, White Kraft (LUX-KWBM-CD-250)~#|#~sp14807852_sc7
LUX CD (7 1/4 x 8) LUX Kraft Bubble Mailer 250/Pack, White Kraft (LUX-KWBM-CD-250) is Out of stock
Item: 24260351
Model: LUX-KWBM-CD-250
Price is $115.79
Unit of measure 250/Pack
Staples QuickStrip EasyClose Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (19956)~#|#~sp42170740_sc7
Staples QuickStrip EasyClose Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (19956) is Out of stock
Item: 871070
Model: 19956
Price is $5.59
Unit of measure 100/Box
Quality Park Self Seal Expansion Kraft Envelope, 10 9/10" x 5", Brown, 25/Box (QUA93331)~#|#~m000015847_sc7
Quality Park Self Seal Expansion Kraft Envelope, 10 9/10" x 5", Brown, 25/Box (QUA93331) is Out of stock
Item: 445548
Model: QUA93331
No reviews yet
Price is $20.69
Unit of measure 25/Box
JAM Paper Open End #11 Currency Envelope, 4 1/2" x 10 3/8", Orange Brite Hue, 50/Pack (3156394I)~#|#~m003904556_sc7JAM Paper Open End #11 Currency Envelope, 4 1/2" x 10 3/8", Orange Brite Hue, 50/Pack (3156394I)~#|#~m003904555_sc7
JAM Paper Open End #11 Currency Envelope, 4 1/2" x 10 3/8", Orange Brite Hue, 50/Pack (3156394I) is Out of stock
Item: 1588672
Model: 3156394I
No reviews yet
Price is $28.29
Unit of measure 50/Pack
Quality Park Kraft #1 Envelope 2 1/4" x 3 1/2", Brown, 500/Box (QUA50162)~#|#~sp44851440_sc7
Quality Park Kraft #1 Envelope 2 1/4" x 3 1/2", Brown, 500/Box (QUA50162) is Out of stock
Item: 638571
Model: QUA50162
Price is $50.79
Unit of measure 500/Box
Staples Tyvek EasyClose Catalog Envelopes, 6"L x 9"H, White, 100/Box (SPL17151)~#|#~sp37070013_sc7
Staples Tyvek EasyClose Catalog Envelopes, 6"L x 9"H, White, 100/Box (SPL17151) is Out of stock
Item: 787481
Model: ST19864
Price is $25.69
Unit of measure 100/Box
JAM Paper Self Seal Business Envelope, 70lb, 8 1/2 x 8 1/2, White, 250 Pack (10977-250)~#|#~sp226423853_sc7JAM Paper Self Seal Business Envelope, 70lb, 8 1/2 x 8 1/2, White, 250 Pack (10977-250)~#|#~sp226423852_sc7
JAM Paper Self Seal Business Envelope, 70lb, 8 1/2 x 8 1/2, White, 250 Pack (10977-250) is Out of stock
Item: 24578295
Model: 10977-250
No reviews yet
Price is $80.95
Unit of measure 250/Pack
Quality Park Gummed Catalog Envelope, 10" x 13", Woven White, 250/Box (41689)~#|#~s0171328_sc7
Quality Park Gummed Catalog Envelope, 10" x 13", Woven White, 250/Box (41689) is Out of stock
Item: 377338
Model: QUA41689
No reviews yet
Unit of measure 250/Box
Staples First Class Tyvek EasyClose Catalog Envelopes, 13" x 10", White, 100/Box (SPL534651)~#|#~sp36619431_sc7
Staples First Class Tyvek EasyClose Catalog Envelopes, 13" x 10", White, 100/Box (SPL534651) is Out of stock
Item: 534651
Model: SPL534651
Price is $210.19
Unit of measure 100/Box
JAM Paper A9 Colored Invitation Envelopes, 5.75 x 8.75, Red Recycled, 25/Pack (14257)~#|#~sp115352031_sc7JAM Paper A9 Colored Invitation Envelopes, 5.75 x 8.75, Red Recycled, 25/Pack (14257)~#|#~sp115352030_sc7
JAM Paper A9 Colored Invitation Envelopes, 5.75 x 8.75, Red Recycled, 25/Pack (14257) is Out of stock
Item: 263860
Model: 14257
Price is $11.19
Unit of measure 25/Pack
JAM Paper Self Seal #6 Coin Business Envelopes, 3 3/8" x 6", White, 100/Pack (356838557D)~#|#~F9F300F1-98E3-4764-AFF472BE2E7466A0_sc7
JAM Paper Self Seal #6 Coin Business Envelopes, 3 3/8" x 6", White, 100/Pack (356838557D) is Out of stock
Item: 24557989
Model: 356838557D
No reviews yet
Price is $29.49
Unit of measure 100/Pack
JAM Paper #10 Invitation Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 1000/Carton (15847B)~#|#~m003904529_sc7JAM Paper #10 Invitation Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 1000/Carton (15847B)~#|#~m003904528_sc7
JAM Paper #10 Invitation Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 1000/Carton (15847B) is Out of stock
Item: 261197
Model: 15847B
No reviews yet
Price is $242.69
Unit of measure 1000/Carton
JAM Paper Self Seal Nonstandard Envelope, 8 1/2" x 8 1/2", Brown Kraft, 250/Pack (8575-GB-250)~#|#~EDE7934C-B02F-499F-95F3803C33EB4432_sc7
JAM Paper Self Seal Nonstandard Envelope, 8 1/2" x 8 1/2", Brown Kraft, 250/Pack (8575-GB-250) is Out of stock
Item: 24578521
Model: 8575-GB-250
No reviews yet
Price is $55.39
Unit of measure 250/Pack
Staples Tyvek EasyClose Catalog Envelopes, 15"L x 10"H, White, 100/Box (SPL534628)~#|#~sp37069921_sc7Staples Tyvek EasyClose Catalog Envelopes, 15"L x 10"H, White, 100/Box (SPL534628)~#|#~sp37069923_sc7
Staples Tyvek EasyClose Catalog Envelopes, 15"L x 10"H, White, 100/Box (SPL534628) is Out of stock
Item: 534628
Model: SPL534628
Price is $133.59
Unit of measure 100/Box
JAM Paper Self Seal Nonstandard Envelope, 8 1/2" x 8 1/2", Brown Kraft, 50/Pack (8575-GB-50)~#|#~DB543859-1D19-435D-A26889678C5ED94A_sc7
JAM Paper Self Seal Nonstandard Envelope, 8 1/2" x 8 1/2", Brown Kraft, 50/Pack (8575-GB-50) is Out of stock
Item: 24578312
Model: 8575-GB-50
No reviews yet
Price is $15.79
Unit of measure 50/Pack
JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Natural White Laid, 25/Pack (75134)~#|#~m007159147_sc7JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Natural White Laid, 25/Pack (75134)~#|#~m007159146_sc7
JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Natural White Laid, 25/Pack (75134) is Out of stock
Item: 263985
Model: 75134
No reviews yet
Price is $9.99
Unit of measure 25/Pack
JAM Paper 9 x 12 Booklet Colored Envelopes, Ultra Fuchsia Pink, 50/Pack (5156770i)~#|#~sp4211422_sc7JAM Paper 9 x 12 Booklet Colored Envelopes, Ultra Fuchsia Pink, 50/Pack (5156770i)~#|#~sp4211421_sc7
JAM Paper 9 x 12 Booklet Colored Envelopes, Ultra Fuchsia Pink, 50/Pack (5156770i) is Out of stock
Item: 2478035
Model: 5156770I
No reviews yet
Price is $34.09
Unit of measure 50/Pack
Medical Arts Press Self Seal Security Tinted Business Envelopes, 9" x 13", White, 100/Pack (24147)~#|#~sp44852269_sc7
Medical Arts Press Self Seal Security Tinted Business Envelopes, 9" x 13", White, 100/Pack (24147) is Out of stock
Item: 413520
Model: 24147
Unit of measure 100/Pack
Medical Arts Press® Pill Envelopes; 3-1/8" x 5-1/2", White, Gummed, Blank, Style D, 500/Box~#|#~m002401311_sc7
Medical Arts Press® Pill Envelopes; 3-1/8" x 5-1/2", White, Gummed, Blank, Style D, 500/Box is Out of stock
Item: 540828
Model: 72071
No reviews yet
Unit of measure 500/Box
Quality Park Clasp & Moistenable Glue Nonstandard Kraft Catalog Envelope, 9" x 12", Brown, 100/Box (QUA43090)~#|#~s0293058_sc7Quality Park Clasp & Moistenable Glue Nonstandard Kraft Catalog Envelope, 9" x 12", Brown, 100/Box (QUA43090)~#|#~m000015802_sc7
Quality Park Clasp & Moistenable Glue Nonstandard Kraft Catalog Envelope, 9" x 12", Brown, 100/Box (QUA43090) is Out of stock
Item: 513233
Model: QUA43090
Unit of measure 100/Box
LUX 9" x 12" Open End Envelopes 50/Pack, 80lb. White, Inkjet (1590-32IJ-50)~#|#~B15AB0F1-7F34-450C-B1486C040B480BD3_sc7
LUX 9" x 12" Open End Envelopes 50/Pack, 80lb. White, Inkjet (1590-32IJ-50) is Out of stock
Item: 24260720
Model: 1590-32IJ-50
No reviews yet
Price is $32.19
Unit of measure 50/Pack
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.