Sponsored Products
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JAM Paper 5 x 6.125 Booklet Foil Envelopes with Self-Adhesive Closure, Blue with White Snowflakes, 100/Pack (01336166B)~#|#~m000141501_sc7
Item: 362915
Model: 01336166B
No reviews yet
Price is $108.99
Unit of measure 100/Pack
Free delivery by Mon, Feb 16
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LUX A8 Foil Lined Invitation Envelopes (5 1/2 x 8 1/8) 250/Box, White w/Red LUX Lining (FLWH4885-01-250)~#|#~m000082135_sc7
Item: 513804
Model: FLWH4885-01-250
No reviews yet
Price is $101.39
Free delivery by Wed, Feb 18
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LUX 3 1/4 x 3 1/4 Square Envelopes, 250/Box, Champagne Metallic (8503-M08-250)~#|#~m003307882_sc7
Item: 1985249
Model: 8503-M08-250
No reviews yet
Price is $98.89
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Wisteria (LUX-4865-106500)~#|#~m000081748_sc7
Item: 517500
Model: LUX-4865-106500
No reviews yet
Price is $95.89
Free delivery by Wed, Feb 18
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LUX 6 1/2 x 6 1/2 Square Envelopes, 500/Box, Quartz Metallic (8535-08-500)~#|#~FAD4CC31-325B-4D72-B28D48A156A0A166_sc7LUX 6 1/2 x 6 1/2 Square Envelopes, 500/Box, Quartz Metallic (8535-08-500)~#|#~AC2E4FBB-34E5-4329-85F4DB249CAB6F5D_sc7
Item: 514790
Model: 8535-08-500
No reviews yet
Price is $197.07
Free delivery by Wed, Feb 18
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Lilac Purple, 25/Pack (241332378)~#|#~sp4808511_sc7JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Lilac Purple, 25/Pack (241332378)~#|#~sp4808510_sc7
Item: 2632864
Model: 241332378
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX Slimline Invitation Envelopes (3 7/8 x 8 7/8) 50/Pack, 24lb. Bright White (72973-50)~#|#~sp14807860_sc7
Item: 24260338
Model: 72973-50
Price is $12.39
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Pack, Brilliant White - 100% Cotton (4880-SBW-1000)~#|#~sp14807616_sc7
Item: 24260870
Model: 4880-SBW-1000
No reviews yet
Price is $195.74
Unit of measure 1000/Pack
Free delivery by Wed, Feb 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Taupe Metallic (5380-M09-1M)~#|#~m005902320_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Taupe Metallic (5380-M09-1M)~#|#~m005823888_sc7
Item: 2146113
Model: 5380-M09-1M
No reviews yet
Price is $280.98
Unit of measure 1000/Pack
Free delivery by Wed, Feb 18
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LUX 80lbs. 5" x 5" Square Envelopes W/Peel & Press, Navy Blue, 250/BX~#|#~m000081531_sc7
Item: 388727
Model: LUX-8505-103-25
No reviews yet
Price is $88.89
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792295I)~#|#~m003904799_sc7JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792295I)~#|#~m003904798_sc7
Item: 1588517
Model: 2792295I
No reviews yet
Price is $57.69
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 7 1/2 x 7 1/2 Square Envelopes, 250/Box, Silver Metallic (8555-06-250)~#|#~m004063768_sc7
Item: 2146109
Model: 8555-06-250
No reviews yet
Price is $125.00
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, Bulk 1000/Carton (03993004C)~#|#~sp137086853_sc7JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, Bulk 1000/Carton (03993004C)~#|#~sp137086231_sc7
Item: 261334
Model: 03993004C
No reviews yet
Price is $227.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 250/Box (GCST508H)~#|#~m003905124_sc7JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 250/Box (GCST508H)~#|#~m003905123_sc7
Item: 1589741
Model: GCST508H
No reviews yet
Price is $314.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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LUX A8 Foil Lined Invitation Envelopes (5 1/2 x 8 1/8) 500/Box, White w/Red LUX Lining (FLWH4885-01-500)~#|#~m000082135_sc7
Item: 513803
Model: FLWH4885-01-500
No reviews yet
Price is $142.77
Free delivery by Wed, Feb 18
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Green Recycled, Bulk 1000/Carton (67195B)~#|#~m003904610_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Green Recycled, Bulk 1000/Carton (67195B)~#|#~m003904609_sc7
Item: 261281
Model: 67195B
No reviews yet
Price is $227.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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LUX 6" x 9" Button & String Envelopes, 250/Box, 28lb. White (69BS-28W-250)~#|#~9C0937C6-20D2-42CE-9EC535B9A8DA2C4D_sc7LUX 6" x 9" Button & String Envelopes, 250/Box, 28lb. White (69BS-28W-250)~#|#~DB475B35-5E4C-4B00-A66FA32D774B448C_sc7
Item: 2444631
Model: 69BS-28W-250
No reviews yet
Price is $219.68
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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JAM Paper 6 x 6 Square Invitation Envelopes, Presidential Blue, 25/Pack (563916914)~#|#~m003000921_sc7JAM Paper 6 x 6 Square Invitation Envelopes, Presidential Blue, 25/Pack (563916914)~#|#~m003000920_sc7
Item: 261136
Model: 563916914
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 9 x 9 Square Envelopes, 50/Box, Clear Translucent (8585-50-50)~#|#~m000081665_sc7
Item: 282322
Model: 8585-50-50
No reviews yet
Price is $35.10
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX A7 Full Face Window Envelopes, Grocery Bag Brown, 1000/Pack (A7FFW-GB-1M)~#|#~m003307941_sc7
Item: 1984836
Model: A7FFW-GB-1M
No reviews yet
Price is $193.68
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I)~#|#~m003904710_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I)~#|#~m003904709_sc7
Item: 1589138
Model: 155630I
No reviews yet
Price is $25.29
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, 25/Pack (PACV357)~#|#~m003905168_sc7JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Blue, 25/Pack (PACV357)~#|#~m003905167_sc7
Item: 262213
Model: PACV357
No reviews yet
Price is $22.69
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m004940462_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m005824005_sc7
Item: 386342
Model: EX4860-22-250
No reviews yet
Price is $54.59
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper 6 x 6 Square Invitation Envelopes, White, Bulk 250/Box (28416H)~#|#~sp126919365_sc7JAM Paper 6 x 6 Square Invitation Envelopes, White, Bulk 250/Box (28416H)~#|#~sp126919364_sc7
Item: 1589844
Model: 28416H
No reviews yet
Price is $134.49
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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JAM Paper 6 x 6 Square Colored Invitation Envelopes, Red Recycled, 50/Pack (2792270I)~#|#~m002934117_sc7JAM Paper 6 x 6 Square Colored Invitation Envelopes, Red Recycled, 50/Pack (2792270I)~#|#~m002934116_sc7
Item: 1588520
Model: 2792270I
No reviews yet
Price is $49.89
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Avocado Green, 1000/BX~#|#~m000081265_sc7
Item: 386990
Model: EX7716-27-1000
No reviews yet
Price is $389.09
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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JAM Paper 6 x 6 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (V018307)~#|#~m004672492_sc7JAM Paper 6 x 6 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (V018307)~#|#~m004672491_sc7
Item: 261995
Model: V018307
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 5.75 x 5.75, Clear, 1000/Carton (5.75X5.75CELLOB)~#|#~m003548833_sc7
Item: 262932
Model: 5.75X5.75CELLOB
No reviews yet
Price is $364.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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LUX #5 1/2 Coin Envelopes (3 1/8 x 5 1/2) 250/Pack, Grocery Bag (LUX512COGB250)~#|#~sp14807952_sc7
Item: 24260223
Model: LUX512COGB250
No reviews yet
Price is $40.89
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Silver, 50/Pack (GCST509I)~#|#~m004672426_sc7JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Silver, 50/Pack (GCST509I)~#|#~m004672425_sc7
Item: 1589240
Model: GCST509I
No reviews yet
Price is $64.99
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, Citrus (FE8535-20-250)~#|#~m000081565_sc7
Item: 387853
Model: FE8535-20-250
No reviews yet
Price is $53.89
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper 9 x 12 Open End Catalog Foil Envelopes with Self-Adhesive Closure, Blue with White Snowflakes, 100/Pack (01323320B)~#|#~m000141500_sc7
Item: 363390
Model: 01323320B
No reviews yet
Price is $158.69
Unit of measure 100/Box
Free delivery by Mon, Feb 16
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LUX 6 1/2 x 6 1/2 Square Envelopes, 1000/Box, 70lb. Bright White (10928-1000)~#|#~m000081546_sc7
Item: 516613
Model: 10928-1000
No reviews yet
Price is $140.39
Free delivery by Wed, Feb 18
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JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, Bulk 1000/Carton (155438B)~#|#~m003904706_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, Bulk 1000/Carton (155438B)~#|#~m003904705_sc7
Item: 261163
Model: 155438B
No reviews yet
Price is $227.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Black Linen with Silver Foil, 25/Pack (3243688)~#|#~m002934337_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Black Linen with Silver Foil, 25/Pack (3243688)~#|#~sp137085792_sc7
Item: 262743
Model: 3243688
Price is $18.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 7 1/2 x 7 1/2 Square Envelopes, 50/Box, Silver Metallic (8555-06-50)~#|#~m004063768_sc7
Item: 2146110
Model: 8555-06-50
No reviews yet
Price is $31.99
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 1000/Carton (GCST508B)~#|#~m003905124_sc7JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 1000/Carton (GCST508B)~#|#~m003905123_sc7
Item: 262057
Model: GCST508B
No reviews yet
Price is $1,065.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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Over 30
LUX 80lb 5 3/4"x8 3/4" A9 Invitation Envelopes W/Peel&Press, Seafoam Blue, 500/BX~#|#~m000082179_sc7
Item: 516857
Model: LUX-4895-113500
No reviews yet
Price is $159.29
Free delivery by Wed, Feb 18
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LUX 7 1/2 x 7 1/2 Square Envelopes, 50/Box, Garnet (EX8555-26-50)~#|#~m000081630_sc7
Item: 282277
Model: EX8555-26-50
Price is $34.89
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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Over 30
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
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.