JAM Paper Cellophane Envelope with Self-Adhesive Closure, 16.4375 x 20.125, Clear, 100/Pack (16.520.125CELLO)~#|#~m000068422_sc7
Item: 262909
Model: 16.520.125CELLO
Price is $159.39
Unit of measure 100/Pack
Free delivery by Tue, Dec 23
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JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Orange Recycled, 50/Pack (95666I)~#|#~m003904690_sc7JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Orange Recycled, 50/Pack (95666I)~#|#~m003904689_sc7
Item: 1589518
Model: 95666I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Natural Linen (4865-NLI-250)~#|#~m000161369_sc7
Item: 384661
Model: 4865-NLI-250
No reviews yet
Price is $47.79
Unit of measure 250/Box
Free delivery by Fri, Dec 26
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JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 50/Pack (191249I)~#|#~m007063366_sc7JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 50/Pack (191249I)~#|#~m007063365_sc7
Item: 1588541
Model: 191249I
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Lime Green, 108/Pack (218B1LIB)~#|#~m004858019_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Lime Green, 108/Pack (218B1LIB)~#|#~m004857853_sc7
Item: 263057
Model: 218B1LIB
No reviews yet
Price is $244.99
Unit of measure 108/Box Price per unit $2.27/Envelope
Free delivery by Tue, Dec 23
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Partners Tyvek Self Seal Catalog Envelope 10" x 15", White, 100/Carton (TYE10152WS)~#|#~F942792D-1684-4332-B5309E4433B96670_sc7
Item: 2301089
Model: TYE10152WS
No reviews yet
Price is $310.59
Unit of measure 100/Carton
Free delivery by Tue, Dec 23
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JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 25/Pack (3992321)~#|#~sp118566184_sc7JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 25/Pack (3992321)~#|#~sp118566189_sc7
Item: 261310
Model: 3992321
Price is $40.29
Unit of measure 25/Pack
Free delivery by Tue, Dec 23
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JAM Paper A7 Colored Invitation Envelopes, 5 1/4" x 7 1/4", Violet Purple Recycled, 50/Pack (80278I)~#|#~m003904638_sc7JAM Paper A7 Colored Invitation Envelopes, 5 1/4" x 7 1/4", Violet Purple Recycled, 50/Pack (80278I)~#|#~m003904637_sc7
Item: 1589523
Model: 80278I
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Black w/Gold LUX Lining (FLBK4880-04-250)~#|#~m000082007_sc7
Item: 387865
Model: FLBK4880-04-250
Price is $168.59
Unit of measure 250/Box
Free delivery by Fri, Dec 26
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Holiday Red (FE4280-15-1000)~#|#~m000082035_sc7
Item: 387845
Model: FE4280-15-1000
No reviews yet
Price is $106.69
Unit of measure 1000/Box
Free delivery by Fri, Dec 26
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JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Red Recycled, 50/Pack (900927182I)~#|#~m002934111_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Red Recycled, 50/Pack (900927182I)~#|#~m002934110_sc7
Item: 1588713
Model: 900927182I
No reviews yet
Price is $19.49
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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JAM Paper 4Bar A1 Strathmore Invitation Envelopes, 3.625 x 5.125, Natural White Wove, 50/Pack (194891I)~#|#~m007159197_sc7JAM Paper 4Bar A1 Strathmore Invitation Envelopes, 3.625 x 5.125, Natural White Wove, 50/Pack (194891I)~#|#~m007159196_sc7
Item: 1588790
Model: 194891I
No reviews yet
Price is $18.89
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Holiday Red (8535-15-50)~#|#~m000081572_sc7
Item: 282209
Model: 8535-15-50
No reviews yet
Price is $20.59
Unit of measure 50/Pack
Delivery by Fri, Dec 26
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JAM Paper 10" x 13" Open End Catalog Colored Envelopes, Orange Recycled, 10/Pack (87766B)~#|#~m003904658_sc7JAM Paper 10" x 13" Open End Catalog Colored Envelopes, Orange Recycled, 10/Pack (87766B)~#|#~m003574755_sc7
Item: 38276
Model: 87766B
No reviews yet
Price is $18.99
Unit of measure 10/Pack
Delivery by Tue, Dec 23
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LUX 9 x 12 Kraft Open End Envelopes 250/Box, 28lb. White w/ Security Tint (WS-4894-ST-250)~#|#~m004063773_sc7
Item: 2146104
Model: WS-4894-ST-250
No reviews yet
Price is $78.89
Unit of measure 250/Pack
Free delivery by Fri, Dec 26
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JAM Paper Expandable Open End Catalog Envelopes with Peel & Seal Closure, 9 x 12 x 2, White, 250/Box (376634177b)~#|#~sp74203583_sc7JAM Paper Expandable Open End Catalog Envelopes with Peel & Seal Closure, 9 x 12 x 2, White, 250/Box (376634177b)~#|#~sp74203889_sc7
Item: 24295253
Model: 376634177B
No reviews yet
Price is $557.99
Unit of measure 250/Pack
Free delivery by Tue, Dec 23
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LUX 5 1/2 x 5 1/2 Square Envelopes 50/Pack, 80lb. Bright White (8515-80W-50)~#|#~sp14807960_sc7
Item: 24260207
Model: 8515-80W-50
No reviews yet
Price is $16.59
Unit of measure 50/Pack
Delivery by Fri, Dec 26
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 1000/Box, Gold Metallic (1COGLD-1000)~#|#~m001149717_sc7
Item: 1028631
Model: 1COGLD-1000
No reviews yet
Price is $195.99
Free delivery by Fri, Dec 26
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Opal, 50/Pack (GCST700I)~#|#~m002168963_sc7
Item: 1589153
Model: GCST700I
No reviews yet
Price is $46.19
Unit of measure 50/Pack
Free delivery by Tue, Dec 23
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Quality Park Self Seal Kraft Catalog Envelope, 9" x 12", Brown, 100/Box (QUA43563)~#|#~m002277550_sc7
Item: 2708508
Model: QUA43563
Price is $48.19
Unit of measure 100/Box
Free delivery by Thu, Dec 18
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 500/Box, Natural (4872-01-500)~#|#~m000211233_sc7
Item: 516319
Model: 4872-01-500
No reviews yet
Price is $88.69
Free delivery by Fri, Dec 26
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Black, 25/Pack (2112730)~#|#~sp4800439_sc7
Item: 2633155
Model: 2112730
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Tue, Dec 23
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LUX 6 x 6 Square Envelopes 50/Pack, Natural (8525-03-50)~#|#~sp14807839_sc7
Item: 24261194
Model: 8525-03-50
No reviews yet
Price is $15.39
Unit of measure 50/Pack
Delivery by Fri, Dec 26
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Holiday Red (FE4280-15-500)~#|#~m000082035_sc7
Item: 513988
Model: FE4280-15-500
No reviews yet
Price is $93.19
Free delivery by Fri, Dec 26
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LUX 4 3/8" x 5 3/4" 70lbs. A2 Invitation Envelopes W/Glue, Candy Pink, 50/Pack~#|#~m000081773_sc7
Item: 282441
Model: EX4870-14-50
Price is $20.69
Unit of measure 50/Pack
Delivery by Fri, Dec 26
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Midnight Black (F-4580-B-250)~#|#~m005902338_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Midnight Black (F-4580-B-250)~#|#~m005823959_sc7
Item: 387519
Model: F-4580-B-250
No reviews yet
Price is $52.95
Unit of measure 250/Box
Free delivery by Fri, Dec 26
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Purple, 50/Pack (563912506I)~#|#~m003904993_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Purple, 50/Pack (563912506I)~#|#~m003904992_sc7
Item: 1589247
Model: 563912506I
Price is $23.29
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Purple, 25/Pack (563912506)~#|#~m003904993_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Purple, 25/Pack (563912506)~#|#~m003904992_sc7
Item: 261625
Model: 563912506
Price is $13.59
Unit of measure 25/Pack
Delivery by Tue, Dec 23
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JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Clear, 50/Pack (53794I)~#|#~m002168712_sc7
Item: 1589051
Model: 53794I
No reviews yet
Price is $35.59
Unit of measure 50/Pack
Free delivery by Tue, Dec 23
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 50/Pack (5360-13-50)~#|#~sp228873505_sc7
Item: 24578435
Model: 5360-13-50
No reviews yet
Price is $21.79
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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JAM Paper 9 x 12 Booklet Commercial Window Envelopes, White, 50/Pack (223932I)~#|#~sp73452810_sc7JAM Paper 9 x 12 Booklet Commercial Window Envelopes, White, 50/Pack (223932I)~#|#~sp73452724_sc7
Item: 24365131
Model: 223932I
Price is $60.99
Unit of measure 50/Pack
Free delivery by Tue, Dec 23
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Amethyst Metallic (5380-17-50)~#|#~m005902313_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Amethyst Metallic (5380-17-50)~#|#~m005823932_sc7
Item: 282726
Model: 5380-17-50
Price is $47.79
Unit of measure 50/Pack
Free delivery by Fri, Dec 26
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Sea Blue Recycled, 25/Pack (15903)~#|#~sp129636640_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Sea Blue Recycled, 25/Pack (15903)~#|#~sp129636639_sc7
Item: 263903
Model: 15903
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, Dec 23
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JAM Paper #16 Policy Business Envelopes, 5.875 x 12, White, 25/Pack (416211891)~#|#~m000141631_sc7
Item: 366666
Model: 416211891
Price is $17.29
Unit of measure 25/Pack
Delivery by Tue, Dec 23
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JAM Paper 10.5" x 10.5" Square Invitation Envelopes, White, 25/Pack (3992320)~#|#~sp121511807_sc7JAM Paper 10.5" x 10.5" Square Invitation Envelopes, White, 25/Pack (3992320)~#|#~sp121511806_sc7
Item: 261309
Model: 3992320
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Tue, Dec 23
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Silver Foil, 25/Pack (82927)~#|#~m004671873_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Silver Foil, 25/Pack (82927)~#|#~m004671872_sc7
Item: 262755
Model: 82927
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Tue, Dec 23
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JAM Paper A9 Colored Invitation Envelopes, 5.75 x 8.75, Red Recycled, Bulk 250/Box (14257H)~#|#~sp115352031_sc7JAM Paper A9 Colored Invitation Envelopes, 5.75 x 8.75, Red Recycled, Bulk 250/Box (14257H)~#|#~sp115352030_sc7
Item: 1590112
Model: 14257H
No reviews yet
Price is $104.79
Unit of measure 250/Box
Free delivery by Tue, Dec 23
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Lux Window Envelopes, Navy 6 x 9 inch 50/Pack~#|#~m002084638_sc7
Item: 1559161
Model: FFW-69-103-50
No reviews yet
Price is $69.09
Free delivery by Fri, Dec 26
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JAM Paper A10 Invitation Envelope, 6 1/2" x 9 1/2", White, 100/Pack (12039C)~#|#~sp115352023_sc7JAM Paper A10 Invitation Envelope, 6 1/2" x 9 1/2", White, 100/Pack (12039C)~#|#~sp115352019_sc7
Item: 2103320
Model: 12039C
Price is $31.29
Unit of measure 100/Pack
Delivery by Tue, Dec 23
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Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (43667)~#|#~s0293005_sc7Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (43667)~#|#~s0171353_sc7
Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (43667) is Out of stock
Item: 813431
Model: QUA43667
Unit of measure 100/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.