Sponsored Products
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JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Midnight Black, 50/Pack (LUX-8510-B-50)~#|#~sp225303105_sc7JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Midnight Black, 50/Pack (LUX-8510-B-50)~#|#~sp225303104_sc7
Item: 24578545
Model: LUX-8510-B-50
No reviews yet
Price is $14.99
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Gold, 25/Pack (1323305)~#|#~sp137086460_sc7JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Gold, 25/Pack (1323305)~#|#~sp137086019_sc7
Item: 260895
Model: 1323305
No reviews yet
Price is $42.89
Unit of measure 25/Pack
Free delivery by Mon, Feb 16
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LUX 6 x 9 Open End Envelopes, Gold Metallic, 500/Box (1644-07-500)~#|#~38C4F61E-72C1-4A23-8EEFAF0E7B26E354_sc7LUX 6 x 9 Open End Envelopes, Gold Metallic, 500/Box (1644-07-500)~#|#~372C448C-60D4-48B9-B87B44AE3CC13C3D_sc7
Item: 1028643
Model: 1644-07-500
No reviews yet
Price is $156.09
Free delivery by Wed, Feb 18
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JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Green Recycled, 25/Pack (95625)~#|#~m003904687_sc7JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Green Recycled, 25/Pack (95625)~#|#~m003904688_sc7
Item: 261272
Model: 95625
No reviews yet
Price is $13.19
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Navy w/Gold LUX Lining (FLNV4880-04-50)~#|#~m000082057_sc7
Item: 282799
Model: FLNV4880-04-50
Price is $41.99
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Pack, Gold Metallic (4885-07-50)~#|#~sp12274947_sc7LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Pack, Gold Metallic (4885-07-50)~#|#~sp12275045_sc7
Item: 24161719
Model: 4885-07-50
No reviews yet
Price is $41.59
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Smoke (EX4880-22-50)~#|#~m005902333_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Smoke (EX4880-22-50)~#|#~m005823972_sc7
Item: 282827
Model: EX4880-22-50
Price is $26.09
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 80lbs. 3 5/8" x 5 1/8" A1 RSVP, Invitation Envelopes W/Peel & Press, Pool Blue, 250/BX~#|#~m000081726_sc7
Item: 388519
Model: LUX-4865-102-25
No reviews yet
Price is $46.59
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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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 $45.79
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 50/Pack (203642I)~#|#~sp121512226_sc7JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 50/Pack (203642I)~#|#~sp121512224_sc7
Item: 1588444
Model: 203642I
Price is $20.49
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Avocado (EX8535-27-50)~#|#~m000081550_sc7
Item: 282184
Model: EX8535-27-50
No reviews yet
Price is $29.69
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 100/Pack (28417B)~#|#~m007049353_sc7JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 100/Pack (28417B)~#|#~m007049352_sc7
Item: 261322
Model: 28417B
No reviews yet
Price is $58.89
Unit of measure 100/Box
Free delivery by Mon, Feb 16
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 500/Box, Teal (LUX-1CO-25-500)~#|#~m001149689_sc7
Item: 1028523
Model: LUX-1CO-25-500
No reviews yet
Price is $68.39
Free delivery by Wed, Feb 18
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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, Feb 16
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JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, 25/Pack (15887)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, 25/Pack (15887)~#|#~m003904555_sc7
Item: 261230
Model: 15887
No reviews yet
Price is $14.89
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 4 1/4" x 6 1/4" A4 Photo, Invitation Envelopes W/Peel & Press, Natural/Gold LUX, 1000/BX~#|#~m005823921_sc7
Item: 388362
Model: FLNT4872-04-100
No reviews yet
Price is $161.19
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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LUX 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Peel & Seel, Crystal Clear, 250/BX~#|#~m000081564_sc7
Item: 386005
Model: CCA9-250
No reviews yet
Price is $96.69
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, 24lb. White~#|#~m004064012_sc7
Item: 2146370
Model: 39892-MI-50
No reviews yet
Price is $13.29
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Silver Foil, 50/Pack (3243671I)~#|#~m004671937_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Silver Foil, 50/Pack (3243671I)~#|#~m004671936_sc7
Item: 1589216
Model: 3243671I
No reviews yet
Price is $27.19
Unit of measure 50/Pack
Delivery by Mon, Feb 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 $20.49
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Grey, 25/Pack (36396434)~#|#~m006948373_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Grey, 25/Pack (36396434)~#|#~m006948372_sc7
Item: 261451
Model: 36396434
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 9 x 9 Square Envelopes, 50/Box, Midnight Black (F-8585-B-50)~#|#~m000081489_sc7
Item: 282324
Model: F-8585-B-50
No reviews yet
Price is $29.69
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 80lb 3 5/8"x5 1/8" A1 Invitation Envelopes W/Peel&Press, Bright White, 500/BX~#|#~m000211246_sc7
Item: 513976
Model: FE4565-05-500
No reviews yet
Price is $90.29
Free delivery by Wed, Feb 18
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JAM Paper 9 x 12 Booklet Colored Envelopes, Blue Recycled, 25/Pack (5156774)~#|#~sp129636598_sc7JAM Paper 9 x 12 Booklet Colored Envelopes, Blue Recycled, 25/Pack (5156774)~#|#~sp129636597_sc7
Item: 261256
Model: 5156774
No reviews yet
Price is $33.59
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A2 (4 3/8 x 5 3/4) 250/Box, White Linen (4870-WLI-250)~#|#~m000161359_sc7
Item: 384754
Model: 4870-WLI-250
Price is $46.59
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Green, 500/Pack (WS-7613-500)~#|#~41862E85-BA2C-4361-9EEA5815D0DAF7FF_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Green, 500/Pack (WS-7613-500)~#|#~FF998892-607A-47ED-8F88458F4846E6A0_sc7
Item: 23996727
Model: WS-7613-500
No reviews yet
Price is $84.69
Unit of measure 500/Pack
Free delivery by Wed, Feb 18
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~A674BC30-B71C-46BF-9F820C4A9D1CB744_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Dark Green, 50/Pack (21514959I)~#|#~7B341DCC-3850-41A6-9A3D4193869C758E_sc7
Item: 2633062
Model: 21514959I
No reviews yet
Price is $29.99
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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LUX #5 1/2 Kraft Coin Envelopes (3 1/8 x 5 1/2) 250/Pack, 28lb. Gray Kraft (512CO-28GK-250)~#|#~D2C83030-76AC-4F7F-8FBEC149A7784303_sc7LUX #5 1/2 Kraft Coin Envelopes (3 1/8 x 5 1/2) 250/Pack, 28lb. Gray Kraft (512CO-28GK-250)~#|#~A2836B8F-A2B7-412F-B738A0933F1B9BDD_sc7
Item: 24261027
Model: 512CO-28GK-250
No reviews yet
Price is $43.49
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Brown, 25/Pack (V01722)~#|#~sp137084310_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Brown, 25/Pack (V01722)~#|#~sp137084266_sc7
Item: 261870
Model: V01722
No reviews yet
Price is $18.69
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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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, Feb 18
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 250/Box, Wasabi (LUX-1CO-L22-250)~#|#~m001149687_sc7
Item: 1028520
Model: LUX-1CO-L22-250
No reviews yet
Price is $84.69
Free delivery by Wed, Feb 18
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JAM Paper 10 x 13 Open End Catalog Colored Envelopes, Orange Recycled, 50/Pack (87766i)~#|#~sp12489312_sc7JAM Paper 10 x 13 Open End Catalog Colored Envelopes, Orange Recycled, 50/Pack (87766i)~#|#~sp12489311_sc7
Item: 24175054
Model: 87766I
Price is $45.19
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, 500/Box, White Linen (8535-WLI-500)~#|#~m000081596_sc7
Item: 385878
Model: 8535-WLI-500
No reviews yet
Price is $123.86
Unit of measure 500/Box
Free delivery by Wed, Feb 18
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JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Black Linen, 500/Pack (8510-BLI-500)~#|#~sp225303095_sc7JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Black Linen, 500/Pack (8510-BLI-500)~#|#~sp225303094_sc7
Item: 24578529
Model: 8510-BLI-500
No reviews yet
Price is $95.32
Unit of measure 500/Pack
Free delivery by Mon, Feb 16
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Fairway Metallic (5380-25-50)~#|#~m005902316_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Fairway Metallic (5380-25-50)~#|#~m005823947_sc7
Item: 282757
Model: 5380-25-50
No reviews yet
Price is $52.69
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 50/Pack (3156401I)~#|#~m003904825_sc7JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 50/Pack (3156401I)~#|#~m003904824_sc7
JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 50/Pack (3156401I) is Out of stock
Item: 1588537
Model: 3156401I
No reviews yet
Price is $28.19
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.