Sponsored Products
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JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Red Recycled, 25/Pack (900927182)~#|#~m002934111_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Red Recycled, 25/Pack (900927182)~#|#~m002934110_sc7
Item: 260826
Model: 900927182
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper 10 x 13 Open End Catalog Envelopes, Presidential Blue, 50/Pack (263919489i)~#|#~sp12489291_sc7JAM Paper 10 x 13 Open End Catalog Envelopes, Presidential Blue, 50/Pack (263919489i)~#|#~sp12489290_sc7
Item: 24175155
Model: 263919489I
No reviews yet
Price is $63.49
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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JAM Paper 9 x 12 Booklet Envelopes, Baby Pink, 25/Pack (31512738)~#|#~m000068863_sc7
Item: 263703
Model: 31512738
No reviews yet
Price is $26.09
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 25/Pack (155630)~#|#~m003904710_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 25/Pack (155630)~#|#~m003904709_sc7
Item: 261358
Model: 155630
No reviews yet
Price is $16.19
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Business Envelopes, White With Silver LUX Lining, 250/BX~#|#~m000081264_sc7
Item: 387906
Model: FLWH4260-03-250
No reviews yet
Price is $66.29
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, White, 500/BX~#|#~m000211244_sc7
Item: 515049
Model: 7716-WPC-500
No reviews yet
Price is $144.69
Free delivery by Wed, Feb 18
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JAM Paper 4Bar A1 Strathmore Invitation Envelopes, 3.625 x 5.125, Natural White Wove, 25/Pack (194891)~#|#~m007159197_sc7JAM Paper 4Bar A1 Strathmore Invitation Envelopes, 3.625 x 5.125, Natural White Wove, 25/Pack (194891)~#|#~m007159196_sc7
Item: 262541
Model: 194891
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Sunflower (LUX-4872-12-50)~#|#~m000081877_sc7
Item: 282567
Model: LUX-4872-12-50
No reviews yet
Price is $12.39
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 6" x 9" Open End Clasp Envelopes, Midnight Black, 100/Pack (87915-50)~#|#~42AE1419-DD74-49E4-BC409BD28F387D60_sc7
Item: 282275
Model: 87915-100
Price is $96.79
Unit of measure 100/Pack
Free delivery by Wed, Feb 18
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JAM Paper 9 x 9 Square Invitation Envelopes, White, 100/Pack (4232B)~#|#~sp115352016_sc7JAM Paper 9 x 9 Square Invitation Envelopes, White, 100/Pack (4232B)~#|#~sp115352015_sc7
Item: 261327
Model: 4232B
No reviews yet
Price is $53.19
Unit of measure 100/Box
Free delivery by Mon, Feb 16
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 50/Pack (155629I)~#|#~m005706328_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 50/Pack (155629I)~#|#~m007065549_sc7
Item: 1589137
Model: 155629I
No reviews yet
Price is $26.49
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper 9 x 9 Square Invitation Envelopes, White, 50/Pack (4232I)~#|#~sp115352016_sc7JAM Paper 9 x 9 Square Invitation Envelopes, White, 50/Pack (4232I)~#|#~sp115352015_sc7
Item: 1588501
Model: 4232I
Price is $44.19
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 9 x 12 Open End Envelopes, 250/Box, Gold Metallic (4894-07-250)~#|#~m001149712_sc7
Item: 1028617
Model: 4894-07-250
No reviews yet
Price is $201.99
Free delivery by Wed, Feb 18
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JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Black, 50/Pack (356730564i)~#|#~sp4808514_sc7JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Black, 50/Pack (356730564i)~#|#~sp4808513_sc7
Item: 2633118
Model: 356730564I
No reviews yet
Price is $20.99
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper #6 Coin Envelopes, 3 3/8" x 6", White, 100/Pack (1623184D)~#|#~F32695E4-9A04-45FF-AFC71CF993316173_sc7
Item: 24557945
Model: 1623184D
No reviews yet
Price is $20.49
Unit of measure 100/Pack
Delivery by Mon, Feb 16
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Holiday Red (FE4270-15-50)~#|#~m000081790_sc7
Item: 282463
Model: FE4270-15-50
No reviews yet
Price is $20.59
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper A6 Translucent Vellum Invitation Envelopes, 4.75 x 6.5, Clear, 25/Pack (13756)~#|#~sp123307992_sc7JAM Paper A6 Translucent Vellum Invitation Envelopes, 4.75 x 6.5, Clear, 25/Pack (13756)~#|#~sp123307991_sc7
Item: 263974
Model: 13756
No reviews yet
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Baby Pink, 50/Pack (155623I)~#|#~sp132864308_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Baby Pink, 50/Pack (155623I)~#|#~sp132864307_sc7
Item: 1589472
Model: 155623I
Price is $22.19
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Bright White Wove, 25/Pack (191220)~#|#~m007159183_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Bright White Wove, 25/Pack (191220)~#|#~m007159182_sc7
Item: 262528
Model: 191220
No reviews yet
Price is $18.19
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper 9 x 12 Booklet Colored Envelopes, Blue Recycled, 100/Pack (5156774c)~#|#~sp129636845_sc7JAM Paper 9 x 12 Booklet Colored Envelopes, Blue Recycled, 100/Pack (5156774c)~#|#~sp129636844_sc7
Item: 2478148
Model: 5156774C
No reviews yet
Price is $98.19
Unit of measure 100/Pack
Free delivery by Mon, Feb 16
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Seafoam (LUX-4880-113250)~#|#~m005902348_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Seafoam (LUX-4880-113250)~#|#~m005823969_sc7
Item: 517491
Model: LUX-4880-113250
No reviews yet
Price is $73.29
Free delivery by Wed, Feb 18
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JAM Paper #12 Policy Envelopes, 4 3/4" x 11", Red Recycled, 50/Pack (900907737I)~#|#~m002934123_sc7JAM Paper #12 Policy Envelopes, 4 3/4" x 11", Red Recycled, 50/Pack (900907737I)~#|#~m002934122_sc7
Item: 1588409
Model: 900907737I
No reviews yet
Price is $28.19
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 25/Pack (6314842)~#|#~sp74308924_sc7JAM Paper #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 25/Pack (6314842)~#|#~sp74308921_sc7
Item: 261536
Model: 6314842
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Copper Metallic (5370-11-50)~#|#~m000081698_sc7
Item: 282446
Model: 5370-11-50
No reviews yet
Price is $18.09
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Quartz Metallic (5375-08-50)~#|#~F3094FDC-37C4-46C4-82BCB3AE54403418_sc7LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Quartz Metallic (5375-08-50)~#|#~7A526A39-5EFE-4144-A82A99C52132DD96_sc7
Item: 282653
Model: 5375-08-50
No reviews yet
Price is $19.99
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Rose Quartz Metallic (5370-04-50)~#|#~m000081732_sc7
Item: 282500
Model: 5370-04-50
No reviews yet
Price is $16.19
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) 1000/Box, Holiday Red (FE4270-15-1000)~#|#~m000081790_sc7
Item: 387821
Model: FE4270-15-1000
No reviews yet
Price is $114.99
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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JAM Paper Cellophane Envelopewith Self-Adhesive Closure, 7.75 x 7.75, Clear, 1000/Carton (7.75X7.75CELLOB)~#|#~m000068414_sc7
Item: 262934
Model: 7.75X7.75CELLOB
No reviews yet
Price is $416.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Yellow Recycled, 25/Pack (96326)~#|#~m003904698_sc7JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Yellow Recycled, 25/Pack (96326)~#|#~m003904697_sc7
Item: 260983
Model: 96326
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Gold Metallic (5375-07-50)~#|#~m000081706_sc7
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Gold Metallic (5375-07-50) is Out of stock
Item: 282611
Model: 5375-07-50
Price is $18.99
Unit of measure 50/Pack
LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Quartz Metallic, 50/Pack~#|#~E3C45768-EEBF-435E-BDBE73282E3B9323_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Quartz Metallic, 50/Pack~#|#~C8FFC367-88FA-4BF1-BF994A897CFFE709_sc7
LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Quartz Metallic, 50/Pack is Out of stock
Item: 281930
Model: 5360-08-50
Price is $27.49
Unit of measure 50/Pack
Quality Park #10 Clasp & Moistenable Glue Kraft Catalog Envelope, 3.38" x 6", Brown Kraft, 100/Box (QUA37010)~#|#~sp53358560_sc7Quality Park #10 Clasp & Moistenable Glue Kraft Catalog Envelope, 3.38" x 6", Brown Kraft, 100/Box (QUA37010)~#|#~sp53358558_sc7
Quality Park #10 Clasp & Moistenable Glue Kraft Catalog Envelope, 3.38" x 6", Brown Kraft, 100/Box (QUA37010) is Out of stock
Item: 513224
Model: QUA37010
No reviews yet
Unit of measure 100/Box
JAM Paper Tyvek Open End Open End #13 Catalog Envelope, 10" x 13", Blue, 10/Pack (V021377B)~#|#~sp61031317_sc7JAM Paper Tyvek Open End Open End #13 Catalog Envelope, 10" x 13", Blue, 10/Pack (V021377B)~#|#~sp61031282_sc7
JAM Paper Tyvek Open End Open End #13 Catalog Envelope, 10" x 13", Blue, 10/Pack (V021377B) is Out of stock
Item: 1912872
Model: V021377B
Price is $15.89
Unit of measure 10/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.