80 lb 6 1/4" x 6 1/4" Peel & Press Square Linen Envelopes, White, 500/Box~#|#~m001149702_sc7
Item: 1028557
Model: 8530-WLI-500
No reviews yet
Price is $134.39
Free delivery by Thu, May 07
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JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, Bulk 1000/Carton (900958831B)~#|#~m007159228_sc7JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, Bulk 1000/Carton (900958831B)~#|#~m007159227_sc7
Item: 262637
Model: 900958831B
No reviews yet
Price is $564.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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LUX #7 Coin Envelopes (3 1/2 x 6 1/2) 250/Pack, Grocery Bag (7CO-GB-250)~#|#~sp14807728_sc7
Item: 24260192
Model: 7CO-GB-250
No reviews yet
Price is $47.49
Unit of measure 250/Pack
Free delivery by Thu, May 07
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JAM Paper Expandable Booklet Envelopes with Peel & Seal Closure, 10 x 12 x 4, White, 250/Box (376634193b)~#|#~sp74203593_sc7JAM Paper Expandable Booklet Envelopes with Peel & Seal Closure, 10 x 12 x 4, White, 250/Box (376634193b)~#|#~sp74203844_sc7
Item: 24295244
Model: 376634193B
No reviews yet
Price is $716.39
Unit of measure 250/Pack
Free delivery by Tue, May 05
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, Black Linen (4875-BLI-250)~#|#~m000081688_sc7
Item: 516185
Model: 4875-BLI-250
No reviews yet
Price is $58.29
Free delivery by Thu, May 07
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LUX 80lb 4 3/8"x5 3/4" A2 RSVP, Invitation Envelopes W/Glue, Aquamarine Metallic, 500/BX~#|#~m000081684_sc7
Item: 515800
Model: 5370-02-500
No reviews yet
Price is $113.69
Free delivery by Thu, May 07
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 500/Box, Taupe Metallic (5375-M09-500)~#|#~m004063752_sc7
Item: 2145961
Model: 5375-M09-500
No reviews yet
Price is $120.99
Unit of measure 500/Pack
Free delivery by Thu, May 07
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JAM Paper 6 x 6 Square Invitation Envelopes, Dark Red, Bulk 250/Box (31511296H)~#|#~m002934224_sc7JAM Paper 6 x 6 Square Invitation Envelopes, Dark Red, Bulk 250/Box (31511296H)~#|#~m002934223_sc7
Item: 1589826
Model: 31511296H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Tue, May 05
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Blonde Metallic (4872-M07-50)~#|#~sp14807620_sc7
Item: 24260702
Model: 4872-M07-50
Price is $13.69
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 500/Box, Silver w/Black LUX Lining (FLSL4872-02-500)~#|#~m000081874_sc7
Item: 513844
Model: FLSL4872-02-500
No reviews yet
Price is $210.49
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Seafoam (LUX-4865-113-50)~#|#~m000081735_sc7
Item: 282399
Model: LUX-4865-113-50
No reviews yet
Price is $12.69
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Baby Blue (EX8535-13-50)~#|#~m000081552_sc7
Item: 282186
Model: EX8535-13-50
No reviews yet
Price is $24.59
Unit of measure 50/Pack
Delivery by Thu, May 07
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Over 30
JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Aqua Blue, Bulk 250/Box (157460H)~#|#~m002934473_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Aqua Blue, Bulk 250/Box (157460H)~#|#~m002934472_sc7
Item: 1588968
Model: 157460H
No reviews yet
Price is $82.99
Unit of measure 250/Box
Free delivery by Tue, May 05
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Over 30
Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Bx (43667)~#|#~s0293005_sc7Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Bx (43667)~#|#~s0171353_sc7
Item: QUA43667
Model: QUA43667
Price is $61.99
Unit of measure Box
Free delivery by Thu, Apr 30
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Malachite Deep Green, 50/Pack (GCST703I)~#|#~m002168965_sc7
Item: 1589157
Model: GCST703I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Tue, May 05
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Over 30
JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Orange Recycled, Bulk 1000/Carton (356730548C)~#|#~m003757870_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Orange Recycled, Bulk 1000/Carton (356730548C)~#|#~m003562854_sc7
Item: 2103413
Model: 356730548C
No reviews yet
Price is $271.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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Over 30
LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes W/Glue, Baby Blue, 250/BX~#|#~m000081266_sc7
Item: 386927
Model: EX7716-13-250
No reviews yet
Price is $128.59
Unit of measure 250/Box
Free delivery by Thu, May 07
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Over 30
LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Box, Clear Translucent (4885-00-50)~#|#~m000082127_sc7
Item: 282879
Model: 4885-00-50
No reviews yet
Price is $35.69
Unit of measure 50/Pack
Free delivery by Thu, May 07
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JAM Paper 6 x 9 Open End Catalog Envelopes, Black, 50/Pack (88095i)~#|#~sp126919035_sc7JAM Paper 6 x 9 Open End Catalog Envelopes, Black, 50/Pack (88095i)~#|#~sp126919034_sc7
Item: 24295225
Model: 88095I
No reviews yet
Price is $48.49
Unit of measure 50/Pack
Free delivery by Tue, May 05
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Over 30
JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Copper, 25/Pack (GCST651)~#|#~m003905134_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Copper, 25/Pack (GCST651)~#|#~m003905133_sc7
Item: 261953
Model: GCST651
No reviews yet
Price is $31.39
Unit of measure 25/Pack
Delivery by Tue, May 05
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Over 30
LUX 70lbs. 10" x 13" Open End Envelopes, Smoke Gray, 500/BX (EX4897-22-500)~#|#~8F50DF73-7F35-4A31-AE15383A966F24C3_sc7
Item: 386880
Model: EX4897-22-500
No reviews yet
Price is $197.59
Unit of measure 500/Box
Free delivery by Thu, May 07
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Over 30
LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Grocery Bag (8535-GB-50)
Item: 282208
Model: 8535-GB-50
No reviews yet
Price is $46.89
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, White, 1000/BX~#|#~m000211244_sc7
Item: 515066
Model: 7716-WPC-1000
No reviews yet
Price is $220.19
Free delivery by Thu, May 07
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Silver Foil, Bulk 250/Box (82927H)~#|#~m004671873_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Silver Foil, Bulk 250/Box (82927H)~#|#~m004671872_sc7
Item: 1590199
Model: 82927H
No reviews yet
Price is $85.89
Unit of measure 250/Box
Free delivery by Tue, May 05
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LUX 70lb 7 1/4"x5 1/4" Square Flap Postage Saver Envelopes, Bright White, 1000/BX~#|#~m000081518_sc7LUX 70lb 7 1/4"x5 1/4" Square Flap Postage Saver Envelopes, Bright White, 1000/BX~#|#~43964C72-4044-4051-8F8454F3C85A2194_sc7
Item: 515383
Model: 55PS-W-1000
No reviews yet
Price is $194.49
Free delivery by Thu, May 07
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Ruby Red (LUX-4590-18-50)~#|#~sp12274947_sc7LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Ruby Red (LUX-4590-18-50)~#|#~sp14081672_sc7
Item: 24216129
Model: LUX-4590-18-50
No reviews yet
Price is $24.99
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 6 x 6 Square Invitation Envelopes, Dark Purple, Bulk 1000/Carton (563912522B)~#|#~m003905005_sc7JAM Paper 6 x 6 Square Invitation Envelopes, Dark Purple, Bulk 1000/Carton (563912522B)~#|#~m003905004_sc7
Item: 261642
Model: 563912522B
No reviews yet
Price is $846.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 500/Box (15887H)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 500/Box (15887H)~#|#~m003904555_sc7
Item: 1589644
Model: 15887H
No reviews yet
Price is $202.99
Unit of measure 500/Box
Free delivery by Tue, May 05
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LUX Self Seal Invitation Envelope 7" x 7", Pool Blue, 250/Box (LUX-8545-102-25)~#|#~m000081637_sc7
Item: 388747
Model: LUX-8545-102-25
No reviews yet
Price is $67.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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Over 30
LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 250/Box, Lilac (LUX-1CO-05-250)~#|#~m001149700_sc7
Item: 1028548
Model: LUX-1CO-05-250
No reviews yet
Price is $43.99
Free delivery by Thu, May 07
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Over 30
LUX 5 1/2 x 5 1/2 Square Envelopes, 500/Box, Clear Translucent (8515-50-500)~#|#~m000081479_sc7
Item: 514819
Model: 8515-50-500
No reviews yet
Price is $199.49
Free delivery by Thu, May 07
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 5.0625 x 7.1875, Green, 100/Pack (2783135)~#|#~m000969557_sc7
Item: 235573
Model: 2783135
No reviews yet
Price is $48.99
Unit of measure 100/Pack
Free delivery by Tue, May 05
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, A2, 4.625 x 5.875, Clear, 1000/Carton (A2CELLOB)~#|#~m000068415_sc7
Item: 262925
Model: A2CELLOB
Price is $209.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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Over 30
LUX Open End Window Envelopes 9" x 12"; Mandarin Orange~#|#~m001406669_sc7
Item: 1277776
Model: LUX-1590-11-500
No reviews yet
Price is $170.09
Unit of measure 500/Box
Free delivery by Thu, May 07
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Over 30
JAM Paper Expandable Open End Catalog Envelopes with Peel & Seal Closure, 9 x 12 x 1, White, 250/Box (376634176b)~#|#~sp137084914_sc7
Item: 24295259
Model: 376634176B
No reviews yet
Price is $554.79
Unit of measure 250/Pack
Free delivery by Tue, May 05
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Over 30
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, Azalea Metallic (5375-24-250)~#|#~m000081895_sc7
Item: 385247
Model: 5375-24-250
No reviews yet
Price is $110.79
Unit of measure 250/Box
Free delivery by Thu, May 07
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Over 30
JAM Paper 9 x 12 Booklet Envelopes, Navy Blue, 50/Pack (263916011i)~#|#~sp121512570_sc7JAM Paper 9 x 12 Booklet Envelopes, Navy Blue, 50/Pack (263916011i)~#|#~sp121512569_sc7
Item: 2478160
Model: 263916011I
No reviews yet
Price is $92.19
Unit of measure 50/Pack
Free delivery by Tue, May 05
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Over 30
JAM Paper Square Envelopes, Peel & Press, Seafoam Green, 3 1/4 x 3 1/4, 50 Pack (8503-113-50)~#|#~sp228873533_sc7
Item: 24578481
Model: 8503-113-50
No reviews yet
Price is $12.29
Unit of measure 50/Pack
Delivery by Tue, May 05
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Over 30
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 1000/Box, Garnet (EX4865-26-1000)~#|#~m000081704_sc7
Item: 386422
Model: EX4865-26-1000
No reviews yet
Price is $151.99
Unit of measure 1000/Box
Free delivery by Thu, May 07
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Over 30
LUX Self Seal Nonstandard Invitation Envelope, 6 1/4" x 6 1/4", Midnight Black, Each (LUX-8530-B-250)~#|#~m001149685_sc7
Item: 1028513
Model: LUX-8530-B-250
No reviews yet
Price is $80.59
Free delivery by Thu, May 07
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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.