Sponsored Products
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LUX 6" x 9" Kraft Open End Envelopes, 250/Box, 80lb. White (1644-32IJ-250)~#|#~658FDA5E-4EBC-4E26-B67084E83D864E2B_sc7LUX 6" x 9" Kraft Open End Envelopes, 250/Box, 80lb. White (1644-32IJ-250)~#|#~B41393B8-5B55-4641-AD3734DA6368AFC6_sc7
Item: 2146231
Model: 1644-32IJ-250
No reviews yet
Price is $85.89
Unit of measure 250/Pack
Free delivery by Wed, Dec 17
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Avocado (EX4865-27-50)~#|#~m000081685_sc7
Item: 282347
Model: EX4865-27-50
No reviews yet
Price is $12.89
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX 6.5" x 9.5" Open End Envelopes 50/Pack, Midnight Black (LUX-1645-56-50)~#|#~sp5822112_sc7LUX 6.5" x 9.5" Open End Envelopes 50/Pack, Midnight Black (LUX-1645-56-50)~#|#~3F76275D-0F71-431A-B0EA5AFD88BC93CD_sc7
Item: 23996441
Model: LUX-1645-56-50
No reviews yet
Price is $45.19
Unit of measure 50/Pack
Free delivery by Wed, Dec 17
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Quality Park Tyvek Self Seal Booklet Envelope 10" x 13", White, 100/Box (QUAR4510)~#|#~s0293000_sc7Quality Park Tyvek Self Seal Booklet Envelope 10" x 13", White, 100/Box (QUAR4510)~#|#~s0171548_sc7
Item: 813470
Model: QUAR4510
Price is $230.29
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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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 $36.39
Unit of measure 50/Pack
Free delivery by Wed, Dec 17
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LUX Photo Greeting Invitation Envelopes (4 3/8 x 8 1/4) 50/Pack, 70lb. Bright White (PHGC1-50)~#|#~sp14807645_sc7
Item: 24260690
Model: PHGC1-50
No reviews yet
Price is $16.19
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper A9 Strathmore Invitation Envelopes, 5.75 x 8.75, Bright White Wove, 25/Pack (31911140)~#|#~m007159209_sc7JAM Paper A9 Strathmore Invitation Envelopes, 5.75 x 8.75, Bright White Wove, 25/Pack (31911140)~#|#~m007159208_sc7
Item: 262527
Model: 31911140
No reviews yet
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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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 $16.69
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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LUX W-2 / 1099 Envelopes (5 3/4 x 8) 50/Pack, White (7489-W2-50)~#|#~sp5822112_sc7LUX W-2 / 1099 Envelopes (5 3/4 x 8) 50/Pack, White (7489-W2-50)~#|#~sp5875302_sc7
Item: 23995716
Model: 7489-W2-50
Price is $34.59
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243)~#|#~m007159123_sc7JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243)~#|#~m007159122_sc7
Item: 263993
Model: 30243
No reviews yet
Price is $10.89
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 25/Pack (15861)~#|#~sp111772444_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 25/Pack (15861)~#|#~sp111772442_sc7
Item: 263914
Model: 15861
Price is $10.29
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 3.6875 x 2.375, Clear, 100/Pack (BUSCARDCELLO)~#|#~m000068423_sc7
Item: 262911
Model: BUSCARDCELLO
No reviews yet
Price is $34.19
Unit of measure 100/Pack
Delivery by Mon, Dec 15
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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
Item: 282784
Model: LUX-4880-101-50
Price is $15.95
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 50/Pack (28417I)~#|#~m007049353_sc7JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 50/Pack (28417I)~#|#~m007049352_sc7
Item: 1588508
Model: 28417I
Price is $44.19
Unit of measure 50/Pack
Free delivery by Mon, Dec 15
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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, Dec 15
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70 lb 4" x 4" Peel & Press Square Envelopes, Natural, 50/Pack~#|#~m001149705_sc7
Item: 1029952
Model: 8504-01-50
Price is $30.89
Delivery by Wed, Dec 17
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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
Item: 261403
Model: 31511321
No reviews yet
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Violet Purple Recycled, 25/Pack (356730550)~#|#~m003757872_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Violet Purple Recycled, 25/Pack (356730550)~#|#~m003562852_sc7
Item: 2103450
Model: 356730550
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Green, 500/Pack (86555H)~#|#~6D72CF40-FFBC-49D2-943889305B5B19A6_sc7
Item: 1589639
Model: 86555H
No reviews yet
Price is $144.39
Unit of measure 500/Box
Free delivery by Mon, Dec 15
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JAM Paper A6 Invitation Envelope 4 3/4" x 6 1/2", Presidential Blue, 25/Pack (563916906)~#|#~680C27C9-F04B-4C58-8F7DBBE11E110D00_sc7JAM Paper A6 Invitation Envelope 4 3/4" x 6 1/2", Presidential Blue, 25/Pack (563916906)~#|#~3A786636-C9A0-4FD4-8FC2E9CB4B60A0BF_sc7
Item: 261129
Model: 563916906
Price is $15.89
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Pastel Green (SH4275-04-50)~#|#~m000081941_sc7
Item: 282645
Model: SH4275-04-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Box, Holiday Red (67153-50)~#|#~m000081753_sc7
Item: 282417
Model: 67153-50
Price is $22.59
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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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 $67.49
Unit of measure 25/Pack
Free Next-Day eligible by tomorrow
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Vintage Plum (LUX-4875-104-50)~#|#~m000081963_sc7
Item: 282675
Model: LUX-4875-104-50
No reviews yet
Price is $14.29
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Glue, Jupiter Metallic Red Red, 50/Pack~#|#~m000082163_sc7
Item: 282925
Model: 5395-20-50
Price is $34.79
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper #3 Coin Business Colored Envelopes, 2.5 x 4.25, Ultra Lime Green, 50/Pack (356730536i)~#|#~sp131391312_sc7JAM Paper #3 Coin Business Colored Envelopes, 2.5 x 4.25, Ultra Lime Green, 50/Pack (356730536i)~#|#~sp131391311_sc7
Item: 2478031
Model: 356730536I
No reviews yet
Price is $19.39
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, Natural (4872-01-250)~#|#~m000211233_sc7
Item: 516321
Model: 4872-01-250
No reviews yet
Price is $46.59
Free delivery by Wed, Dec 17
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Sunflower (EX4880-12-50)~#|#~m005902328_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Sunflower (EX4880-12-50)~#|#~m005823974_sc7
Item: 282831
Model: EX4880-12-50
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX 5 x 5 Square Envelopes, 50/Box, Holiday Red (8505-15-50)
Item: 282157
Model: 8505-15-50
Price is $19.95
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Dark Red, Bulk 250/Box (157458H)~#|#~m002934218_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Dark Red, Bulk 250/Box (157458H)~#|#~m002934217_sc7
Item: 1589024
Model: 157458H
No reviews yet
Price is $77.99
Unit of measure 250/Box
Free delivery by Mon, Dec 15
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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 $105.79
Unit of measure 250/Box
Free delivery by Wed, Dec 17
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LUX A2 (4 3/8 x 5 3/4) 250/Box, Holiday Red (FE4270-15-250)~#|#~m000081790_sc7
Item: 387822
Model: FE4270-15-250
No reviews yet
Price is $75.79
Unit of measure 250/Box
Free delivery by Wed, Dec 17
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LUX Self Seal Booklet Envelope, 6" x 9", Natural, 500/Pack (6025-01-500)~#|#~sp14807416_sc7
Item: 24261161
Model: 6025-01-500
No reviews yet
Price is $93.79
Unit of measure 500/Pack
Free delivery by Wed, Dec 17
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 5.75 x 5.75, Clear, 100/Pack (5.75X5.75CELLO)~#|#~m000068420_sc7
Item: 262900
Model: 5.75X5.75CELLO
No reviews yet
Price is $52.39
Unit of measure 100/Pack
Free delivery by Mon, Dec 15
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 12.4375 x 18.25, Clear, 100/Pack (12.5X18.25CELLO)~#|#~m000068422_sc7
Item: 262908
Model: 12.5X18.25CELLO
No reviews yet
Price is $137.79
Unit of measure 100/Pack
Free delivery by Mon, Dec 15
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JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Blue Recycled, 25/Pack (15805)~#|#~m003904517_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Blue Recycled, 25/Pack (15805)~#|#~m003904516_sc7
Item: 263910
Model: 15805
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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LUX A2 Envelope - 24lb. White) 50/Box, Machine Insertable 50/Box~#|#~m004064012_sc7
Item: 2146369
Model: 80132-MI-50
No reviews yet
Price is $25.89
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Peel & Press, Quartz Metallic, 50/Pack~#|#~m000081730_sc7
LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Peel & Press, Quartz Metallic, 50/Pack is Out of stock
Item: 282941
Model: 5395-08-50
Price is $34.79
Unit of measure 50/Pack
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, 24lb. White~#|#~m004064012_sc7
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, 24lb. White is Out of stock
Item: 2146362
Model: 51867-MI-1M
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Price is $69.39
Unit of measure 1000/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.