80 lb 5 3/4" x 5 3/4" Peel & Press Square Envelopes, Navy Blue, 50/Pack~#|#~m001149720_sc7
Item: 1029931
Model: LUX-8520-103-50
Price is $21.49
Delivery by Tue, May 20
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Baby Blue (EX8515-13-50)~#|#~m000081471_sc7
Item: 282102
Model: EX8515-13-50
No reviews yet
Price is $40.69
Unit of measure 50/Pack
Free delivery by Tue, May 20
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912518I)~#|#~m003905003_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Dark Purple, 50/Pack (563912518I)~#|#~m003905002_sc7
Item: 1588602
Model: 563912518I
No reviews yet
Price is $25.39
Unit of measure 50/Pack
Delivery by Fri, May 16
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JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Violet Purple Recycled, 25/Pack (80278)~#|#~m003904638_sc7JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Violet Purple Recycled, 25/Pack (80278)~#|#~m003904637_sc7
Item: 261110
Model: 80278
Price is $10.69
Unit of measure 25/Pack
Delivery by Fri, May 16
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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 $19.99
Unit of measure 25/Pack
Delivery by Fri, May 16
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Ecru with Gold Foil, 25/Pack (2354150)~#|#~sp137086610_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Ecru with Gold Foil, 25/Pack (2354150)~#|#~sp137086016_sc7
Item: 262761
Model: 2354150
Price is $19.99
Unit of measure 25/Pack
Delivery by Fri, May 16
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Baby Blue, 50/Pack (155699I)~#|#~m003904710_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Baby Blue, 50/Pack (155699I)~#|#~m003904709_sc7
Item: 1588737
Model: 155699I
No reviews yet
Price is $33.19
Unit of measure 50/Pack
Delivery by Fri, May 16
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JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Red Recycled, 25/Pack (25048)~#|#~m002934135_sc7JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Red Recycled, 25/Pack (25048)~#|#~m002934134_sc7
Item: 263863
Model: 25048
No reviews yet
Price is $14.49
Unit of measure 25/Pack
Delivery by Fri, May 16
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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 $11.19
Unit of measure 25/Pack
Delivery by Fri, May 16
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Magenta Pink, 250/BX~#|#~m004940454_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Business Envelopes W/Peel & Press, Magenta Pink, 250/BX~#|#~m005823998_sc7
Item: 386315
Model: EX4860-10-250
No reviews yet
Price is $103.19
Unit of measure 250/Box
Free delivery by Tue, May 20
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JAM Paper® Plastic Envelopes with Hook & Loop Closure, Legal Booklet, 9.75 x 14.5, Red, 12/Pack (219V0RE)~#|#~m004672165_sc7JAM Paper® Plastic Envelopes with Hook & Loop Closure, Legal Booklet, 9.75 x 14.5, Red, 12/Pack (219V0RE)~#|#~m004672164_sc7
Item: 2102880
Model: 219V0RE
Price is $32.69
Unit of measure 12/Pack Price per unit $2.72/Envelope
Delivery by Fri, May 16
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Quality Park Unsealed Kraft Catalog Envelope, 22" x 17", Kraft, 25/Box (42356)~#|#~s0171336_sc7Quality Park Unsealed Kraft Catalog Envelope, 22" x 17", Kraft, 25/Box (42356)~#|#~s0288244_sc7
Item: 377341
Model: QUA42356
Price is $47.29
Unit of measure 25/Box
Free delivery by Wed, May 14
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, White, Bulk 250/Box (4023213H)~#|#~m003904861_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, White, Bulk 250/Box (4023213H)~#|#~m003904860_sc7
Item: 1590111
Model: 4023213H
Price is $63.79
Unit of measure 250/Box
Free delivery by Fri, May 16
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Pack, Champagne Metallic (5380-M08-50)~#|#~sp14807641_sc7
Item: 24260940
Model: 5380-M08-50
Price is $25.39
Unit of measure 50/Pack
Delivery by Tue, May 20
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JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Natural White Linen, 50/Pack (99761I)~#|#~m007159157_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Natural White Linen, 50/Pack (99761I)~#|#~m007159156_sc7
Item: 1588915
Model: 99761I
No reviews yet
Price is $19.99
Unit of measure 50/Pack
Delivery by Fri, May 16
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Quality Park USPS First Class Self-Adhesive Mailer Envelope, #98, Green/White, 10" x 15", 100/Box (QUAR1670)~#|#~s0292999_sc7Quality Park USPS First Class Self-Adhesive Mailer Envelope, #98, Green/White, 10" x 15", 100/Box (QUAR1670)~#|#~s0171520_sc7
Item: QUAR1670
Model: QUAR1670
No reviews yet
Price is $190.63
Unit of measure 100/Box
Free delivery by Tue, May 13
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Quality Park Redi-Seal Self Seal Security Tinted #8 Double Window Envelope, 3 5/8" x 8 5/8", White Wove, 1000/Pack (24539-1000)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal Security Tinted #8 Double Window Envelope, 3 5/8" x 8 5/8", White Wove, 1000/Pack (24539-1000)~#|#~sp5875517_sc7
Item: 23996467
Model: 24539-1000
Price is $224.29
Unit of measure 1000/Pack
Free delivery by Tue, May 20
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Holiday Red (8515-15-50)~#|#~m000081484_sc7
Item: 282115
Model: 8515-15-50
No reviews yet
Price is $14.29
Unit of measure 50/Pack
Delivery by Tue, May 20
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Ultra Lime Green, Bulk 250/Box (52610H)~#|#~m003904596_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Ultra Lime Green, Bulk 250/Box (52610H)~#|#~m003904595_sc7
Item: 1589034
Model: 52610H
No reviews yet
Price is $71.59
Unit of measure 250/Box
Free delivery by Fri, May 16
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Avocado (EX4870-27-50)~#|#~m000081765_sc7
Item: 282431
Model: EX4870-27-50
No reviews yet
Price is $23.79
Unit of measure 50/Pack
Delivery by Tue, May 20
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218)~#|#~m003905223_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218)~#|#~m003905222_sc7
Item: 261584
Model: V01218
Price is $12.99
Unit of measure 25/Pack
Delivery by Fri, May 16
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JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, 50/Pack (191189I)~#|#~m007159173_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, 50/Pack (191189I)~#|#~m007159172_sc7
Item: 1589608
Model: 191189I
Price is $19.99
Unit of measure 50/Pack
Delivery by Fri, May 16
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JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Linen, 25/Pack (66670)~#|#~m007159143_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Linen, 25/Pack (66670)~#|#~m007159142_sc7
Item: 262488
Model: 66670
Price is $11.19
Unit of measure 25/Pack
Delivery by Fri, May 16
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JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Ultra Lime Green, 50/Pack (96151I)~#|#~sp131391012_sc7JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Ultra Lime Green, 50/Pack (96151I)~#|#~sp131391011_sc7
Item: 1589522
Model: 96151I
No reviews yet
Price is $16.69
Unit of measure 50/Pack
Delivery by Fri, May 16
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Gold Foil, 25/Pack (3243663)~#|#~sp115352141_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Gold Foil, 25/Pack (3243663)~#|#~sp115352140_sc7
Item: 262760
Model: 3243663
Price is $16.29
Unit of measure 25/Pack
Delivery by Fri, May 16
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Magenta (EX8515-10-50)~#|#~m000081487_sc7
Item: 282118
Model: EX8515-10-50
No reviews yet
Price is $25.29
Unit of measure 50/Pack
Delivery by Tue, May 20
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Quality Park Self Seal Kraft Catalog Envelopes, 10"L x 13"H, Brown, 25/Pack (QUA93336)~#|#~sp43815465_sc7Quality Park Self Seal Kraft Catalog Envelopes, 10"L x 13"H, Brown, 25/Pack (QUA93336)~#|#~sp43815464_sc7
Item: 445596
Model: QUA93336
Price is $65.79
Unit of measure 25/Pack
Free Next-Day eligible by Mon, May 12
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Azalea Metallic Pink~#|#~m004940424_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes W/Glue Closure, Azalea Metallic Pink~#|#~m005823902_sc7
Item: 281916
Model: 5360-24-50
Price is $44.59
Unit of measure 50/Pack
Free delivery by Tue, May 20
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LUX Moistenable Glue Security Tinted Booklet Window Envelope, 6" x 9", 24lb. White w/ Sec. Tint, 50/Pack (69BW-24WMI-50)~#|#~sp12274947_sc7LUX Moistenable Glue Security Tinted Booklet Window Envelope, 6" x 9", 24lb. White w/ Sec. Tint, 50/Pack (69BW-24WMI-50)~#|#~sp12275036_sc7
Item: 24148643
Model: 69BW-24WMI-50
Price is $35.49
Unit of measure 50/Pack
Free delivery by Tue, May 20
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LUX 10 x 15 Open End Envelopes 50/Pack, 28lb. Bright White (4162-50)~#|#~sp14807520_sc7
Item: 24260236
Model: 4162-50
No reviews yet
Price is $38.69
Unit of measure 50/Pack
Free delivery by Tue, May 20
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Quartz Metallic (4872-08-50)~#|#~250367C6-45DB-4F88-9177FAFC4B1AFD73_sc7LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Quartz Metallic (4872-08-50)~#|#~4D69F00C-F9F6-49E5-881FF0011E5F45B6_sc7
Item: 24260555
Model: 4872-08-50
No reviews yet
Price is $14.79
Unit of measure 50/Pack
Delivery by Tue, May 20
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Baby Pink, 50/Pack (155627I)~#|#~sp137085709_sc7
Item: 1589166
Model: 155627I
Price is $23.89
Unit of measure 50/Pack
Delivery by Fri, May 16
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JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Yellow Recycled, 50/Pack (96326I)~#|#~m003904698_sc7JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Yellow Recycled, 50/Pack (96326I)~#|#~m003904697_sc7
Item: 1589524
Model: 96326I
Price is $19.99
Unit of measure 50/Pack
Delivery by Fri, May 16
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Quality Park Kraft Security Tinted Inter-Departmental Envelope 10" x 13", Multi Colors, 100/Box (QUA63778)~#|#~sp41687907_sc7Quality Park Kraft Security Tinted Inter-Departmental Envelope 10" x 13", Multi Colors, 100/Box (QUA63778)~#|#~sp41687906_sc7
Item: 458290
Model: QUA63778
Price is $98.39
Unit of measure 100/Box
Free delivery by Wed, May 14
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Quality Park Gummed Kraft Catalog Envelope, 10" x 13", Kraft, 250/Box (41665)~#|#~s0171323_sc7
Item: 377337
Model: QUA41665
No reviews yet
Price is $69.59
Unit of measure 250/Box
Free Next-Day eligible by Mon, May 12
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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 $11.19
Unit of measure 25/Pack
Delivery by Fri, May 16
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JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, Gold, 10" x 13", 25/Pack (V021378)~#|#~m003905264_sc7JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, Gold, 10" x 13", 25/Pack (V021378)~#|#~m003905263_sc7
Item: 261819
Model: V021378
Price is $41.69
Unit of measure 25/Pack
Free delivery by Fri, May 16
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, #10 Business Booklet, 5.25 x 10, Lime Green, 12/Pack (921B1LI)~#|#~m004857990_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, #10 Business Booklet, 5.25 x 10, Lime Green, 12/Pack (921B1LI)~#|#~m004857824_sc7
Item: 235328
Model: 921B1LI
No reviews yet
Price is $26.49
Unit of measure 12/Pack Price per unit $2.21/Envelope
Delivery by Fri, May 16
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JAM Paper A2 Invitation Envelope 4 3/8" x 5 3/4", Presidential Blue, 25/Pack (563913396)~#|#~533A953B-4BEF-42BE-9568CF0F89AAF5B8_sc7JAM Paper A2 Invitation Envelope 4 3/8" x 5 3/4", Presidential Blue, 25/Pack (563913396)~#|#~C0571050-9254-42C1-82F7C18BE1C63560_sc7
JAM Paper A2 Invitation Envelope 4 3/8" x 5 3/4", Presidential Blue, 25/Pack (563913396) is Out of stock
Item: 261128
Model: 563913396
No reviews yet
Price is $13.89
Unit of measure 25/Pack
JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Ivory Wove, 25/Pack (900849930)~#|#~m007159218_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Ivory Wove, 25/Pack (900849930)~#|#~m007159217_sc7
JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Ivory Wove, 25/Pack (900849930) is Out of stock
Item: 262563
Model: 900849930
Price is $17.69
Unit of measure 25/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.