JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Red Recycled, 25/Pack (356730561)~#|#~m003757873_sc7JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Red Recycled, 25/Pack (356730561)~#|#~m003562853_sc7
Item: 2103398
Model: 356730561
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Thu, May 07
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LUX 6 x 6 Square Envelopes 250/Pack, Natural (8525-03-250)~#|#~sp14807839_sc7
Item: 24260382
Model: 8525-03-250
No reviews yet
Price is $57.39
Unit of measure 250/Pack
Free delivery by Mon, May 11
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JAM Paper #1 Coin Business Colored Envelopes, 2.25 x 3.5, Red Recycled, Bulk 500/Box (356730632H)~#|#~sp121512435_sc7JAM Paper #1 Coin Business Colored Envelopes, 2.25 x 3.5, Red Recycled, Bulk 500/Box (356730632H)~#|#~sp121512434_sc7
Item: 2103499
Model: 356730632H
No reviews yet
Price is $137.39
Unit of measure 500/Box
Free delivery by Thu, May 07
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JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, Black, 100/Pack (356730544B)~#|#~m003757867_sc7JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, Black, 100/Pack (356730544B)~#|#~m003562849_sc7
Item: 2103473
Model: 356730544B
No reviews yet
Price is $39.29
Unit of measure 100/Pack
Free delivery by Thu, May 07
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Lux Full Face #10 Window Envelopes Wasabi 6 x 9 inch 250/Pack~#|#~m002084639_sc7
Item: 1559269
Model: FFW-69-L22-250
No reviews yet
Price is $130.69
Free delivery by Mon, May 11
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JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566184_sc7JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566189_sc7
Item: 1588470
Model: 3992321I
No reviews yet
Price is $72.39
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 6 x 6 Square Envelopes 50/Pack, Clear Translucent (8525-50-50)~#|#~sp14807640_sc7
Item: 24260785
Model: 8525-50-50
No reviews yet
Price is $29.89
Unit of measure 50/Pack
Delivery by Mon, May 11
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JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Red Recycled, 50/Pack (356730561i)~#|#~sp4211527_sc7JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Red Recycled, 50/Pack (356730561i)~#|#~sp4211526_sc7
Item: 2478036
Model: 356730561I
No reviews yet
Price is $32.09
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper A10 Foil Lined Invitation Envelopes, 6 x 9.5, White with Silver Foil, Bulk 250/Box (900905601H)~#|#~m004672036_sc7JAM Paper A10 Foil Lined Invitation Envelopes, 6 x 9.5, White with Silver Foil, Bulk 250/Box (900905601H)~#|#~m004672035_sc7
Item: 1589965
Model: 900905601H
No reviews yet
Price is $144.49
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX 80lbs. 4 3/8" x 5 3/4"  A2 RSVP, Invitation Envelopes  W/Peel & Press, Citrus Yellow, 250/BX~#|#~m000081776_sc7
Item: 387825
Model: FE4270-20-250
No reviews yet
Price is $59.99
Unit of measure 250/Box
Free delivery by Mon, May 11
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JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Jupiter Red, 50/Pack (V018263I)~#|#~m002934283_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Jupiter Red, 50/Pack (V018263I)~#|#~m002934282_sc7
Item: 1588876
Model: V018263I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Thu, May 07
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JAM Paper 6" x 9" Open End Catalog Colored Envelopes, Red Recycled, 10/Pack (V0128139B)~#|#~m002934044_sc7JAM Paper 6" x 9" Open End Catalog Colored Envelopes, Red Recycled, 10/Pack (V0128139B)~#|#~m002934043_sc7
Item: 38343
Model: V0128139B
Price is $13.89
Unit of measure 10/Pack
Delivery by Thu, May 07
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JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, Baby Pink, 100/Pack (356730543B)~#|#~m003757866_sc7JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, Baby Pink, 100/Pack (356730543B)~#|#~m003562850_sc7
Item: 2103472
Model: 356730543B
Price is $35.49
Unit of measure 100/Pack
Free delivery by Thu, May 07
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JAM Paper #7 Coin Business Colored Envelopes, 3.5 x 6.5, Blue Recycled, Bulk 500/Box (1526764H)~#|#~m003757920_sc7JAM Paper #7 Coin Business Colored Envelopes, 3.5 x 6.5, Blue Recycled, Bulk 500/Box (1526764H)~#|#~m003750601_sc7
Item: 2103172
Model: 1526764H
Price is $172.79
Unit of measure 500/Box
Free delivery by Thu, May 07
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JAM Paper Cellophane Envelopewith Self-Adhesive Closure, 3.25 x 3.25, Clear, 1000/Carton (3.25X3.25CELLOB)~#|#~m000068411_sc7
Item: 262920
Model: 3.25X3.25CELLOB
No reviews yet
Price is $209.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, Bulk 1000/Carton (356730562C)~#|#~m003757874_sc7JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, Bulk 1000/Carton (356730562C)~#|#~m003562859_sc7
Item: 2103275
Model: 356730562C
No reviews yet
Price is $272.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, A7, 5.4375 x 7.375, Clear, 1000/Carton (A7CELLOB)~#|#~m000068417_sc7
Item: 262927
Model: A7CELLOB
No reviews yet
Price is $246.69
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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JAM Paper Kraft #12 Policy Business Envelopes, 4.75 x 11, Brown Kraft Paper Bag, Bulk 500/Box (2119018862H)~#|#~m004672048_sc7JAM Paper Kraft #12 Policy Business Envelopes, 4.75 x 11, Brown Kraft Paper Bag, Bulk 500/Box (2119018862H)~#|#~m004672047_sc7
Item: 1590033
Model: 2119018862H
No reviews yet
Price is $227.99
Unit of measure 500/Box
Free delivery by Thu, May 07
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 500/Box, Magenta (EX4875-10-500)~#|#~m000081928_sc7
Item: 514401
Model: EX4875-10-500
No reviews yet
Price is $111.69
Free delivery by Mon, May 11
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Pack, Blush (LUX-4880-39-250)~#|#~sp5822112_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Pack, Blush (LUX-4880-39-250)~#|#~sp5874356_sc7
Item: 23996057
Model: LUX-4880-39-250
No reviews yet
Price is $66.19
Unit of measure 250/Pack
Free delivery by Mon, May 11
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70 lb 5 3/4" x 5 3/4" Peel & Press Square Envelopes, Grocery Bag Brown, 50/Pack~#|#~m000081634_sc7
Item: 1030025
Model: 8520-GB-50
No reviews yet
Price is $35.99
Free delivery by Mon, May 11
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LUX A6 Foil Lined Invitation Envelopes (4 3/4 x 6 1/2) 1000/Box, White w/Red LUX Lining (FLWH4875-01-100)~#|#~m000081968_sc7
Item: 388443
Model: FLWH4875-01-100
No reviews yet
Price is $155.39
Unit of measure 1000/Box
Free delivery by Mon, May 11
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LUX 5 3/4" x 8 3/4" 70lbs. A9 Invitation Envelopes W/Peel & Press, Magenta Pink, 50/Pack~#|#~m000082167_sc7
LUX 5 3/4" x 8 3/4" 70lbs. A9 Invitation Envelopes W/Peel & Press, Magenta Pink, 50/Pack is Out of stock
Item: 282929
Model: EX4895-10-50
Price is $35.69
Unit of measure 50/Pack
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Silver Metallic, 250/BX~#|#~m004940415_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Silver Metallic, 250/BX~#|#~m005823916_sc7
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Silver Metallic, 250/BX is Out of stock
Item: 384974
Model: 5360-06-250
No reviews yet
Price is $140.09
Unit of measure 250/Box
Quality Park® 28lb. Clasp Colored Catalog Envelopes, Grey Kraft, 10x13", 100/Box~#|#~s0269137_sc7
Quality Park Clasp Nonstandard Kraft Catalog Envelope, 10" x 13", Gray, 100/Box (QUA38597) is Out of stock
Item: QUA38597
Model: QUA38597
Price is $43.99
Unit of measure Box
JAM Paper 6.5" x 6.5" Square Translucent Vellum Invitation Envelopes, Burgundy, 100/Pack (2813778B)~#|#~sp137085979_sc7
JAM Paper 6.5" x 6.5" Square Translucent Vellum Invitation Envelopes, Burgundy, 100/Pack (2813778B) is Out of stock
Item: 38052
Model: 2813778B
No reviews yet
Price is $64.99
Unit of measure 100/Pack
JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Dark Red, 25/Pack (31511321)~#|#~m002934222_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Dark Red, 25/Pack (31511321)~#|#~m002934221_sc7
JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Dark Red, 25/Pack (31511321) is Out of stock
Item: 261403
Model: 31511321
No reviews yet
Price is $20.49
Unit of measure 25/Pack
JAM Paper 4Bar A1 Parchment Invitation Envelopes, 3.625 x 5.125, White Recycled, 25/Pack (900926656)~#|#~m000067959_sc7
JAM Paper 4Bar A1 Parchment Invitation Envelopes, 3.625 x 5.125, White Recycled, 25/Pack (900926656) is Out of stock
Item: 261885
Model: 900926656
No reviews yet
Price is $10.29
Unit of measure 25/Pack
LUX 7 x 7 Square Envelopes, 50/Box, Clear Translucent (8545-50-50)~#|#~m000081633_sc7
LUX 7 x 7 Square Envelopes, 50/Box, Clear Translucent (8545-50-50) is Out of stock
Item: 282280
Model: 8545-50-50
No reviews yet
Price is $34.19
Unit of measure 50/Pack
LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Navy w/Gold LUX Lining (FLNV4880-04-250)~#|#~m000082057_sc7
LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Navy w/Gold LUX Lining (FLNV4880-04-250) is Out of stock
Item: 387896
Model: FLNV4880-04-250
No reviews yet
Price is $111.49
Unit of measure 250/Box
JAM Paper 9 x 12 Booklet Envelopes, Dark Red, 100/Pack (31511309c)~#|#~sp4211448_sc7JAM Paper 9 x 12 Booklet Envelopes, Dark Red, 100/Pack (31511309c)~#|#~sp4211447_sc7
JAM Paper 9 x 12 Booklet Envelopes, Dark Red, 100/Pack (31511309c) is Out of stock
Item: 2478163
Model: 31511309C
No reviews yet
Price is $108.99
Unit of measure 100/Pack
JAM Paper 9 x 12 Booklet Envelopes, Dark Red, 25/Pack (31511309)~#|#~m002934230_sc7JAM Paper 9 x 12 Booklet Envelopes, Dark Red, 25/Pack (31511309)~#|#~m002934229_sc7
JAM Paper 9 x 12 Booklet Envelopes, Dark Red, 25/Pack (31511309) is Out of stock
Item: 261410
Model: 31511309
No reviews yet
Price is $32.29
Unit of measure 25/Pack
JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Red, Bulk 250/Box (31511307H)~#|#~sp121512387_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Red, Bulk 250/Box (31511307H)~#|#~sp121512386_sc7
JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Red, Bulk 250/Box (31511307H) is Out of stock
Item: 1590179
Model: 31511307H
No reviews yet
Price is $82.99
Unit of measure 250/Box
LUX 9 x 12 Booklet Envelopes 50/Pack, Vintage Plum (LUX-4899-104-50)~#|#~sp14807593_sc7
LUX 9 x 12 Booklet Envelopes 50/Pack, Vintage Plum (LUX-4899-104-50) is Out of stock
Item: 24261334
Model: LUX-4899-104-50
No reviews yet
Price is $23.59
Unit of measure 50/Pack
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Limelight (LUX-4880-101-50)~#|#~m005902342_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Limelight (LUX-4880-101-50)~#|#~m005823956_sc7
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Limelight (LUX-4880-101-50) is Out of stock
Item: 282784
Model: LUX-4880-101-50
Price is $15.95
Unit of measure 50/Pack
LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Garnet (EX8515-26-50)~#|#~m000081481_sc7
LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Garnet (EX8515-26-50) is Out of stock
Item: 282112
Model: EX8515-26-50
No reviews yet
Price is $21.99
Unit of measure 50/Pack
JAM Paper A8 Invitation Envelope 5 1/2" x 8 1/8", Presidential Blue, 250/Box (563916908H)~#|#~C96C050A-F449-4B9D-96DDC31B9FFCACB6_sc7JAM Paper A8 Invitation Envelope 5 1/2" x 8 1/8", Presidential Blue, 250/Box (563916908H)~#|#~C76BE2FA-397E-40E2-8F53EF39F90C99EA_sc7
JAM Paper A8 Invitation Envelope 5 1/2" x 8 1/8", Presidential Blue, 250/Box (563916908H) is Out of stock
Item: 1590005
Model: 563916908H
No reviews yet
Price is $98.99
Unit of measure 250/Box
LUX A2 (4 3/8 x 5 3/4) 50/Box, Clear Translucent (4870-00-50)~#|#~m000081697_sc7
LUX A2 (4 3/8 x 5 3/4) 50/Box, Clear Translucent (4870-00-50) is Out of stock
Item: 282445
Model: 4870-00-50
No reviews yet
Price is $20.79
Unit of measure 50/Pack
JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Gold, Bulk 250/Box (V018244H)~#|#~m003905241_sc7JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Gold, Bulk 250/Box (V018244H)~#|#~m003905240_sc7
JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Gold, Bulk 250/Box (V018244H) is Out of stock
Item: 1589369
Model: V018244H
No reviews yet
Price is $189.99
Unit of measure 250/Box
JAM Paper 4Bar A1 Parchment Invitation Envelopes, 3.625 x 5.125, White Recycled, 50/Pack (900926656I)~#|#~m002168862_sc7
JAM Paper 4Bar A1 Parchment Invitation Envelopes, 3.625 x 5.125, White Recycled, 50/Pack (900926656I) is Out of stock
Item: 1588631
Model: 900926656I
Price is $18.89
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.