Square Envelopes

LUX Moistenable Glue #10 Window Envelope, 4 1/2" x 9 1/2", Grocery Bag Brown, 250/Box (4860-WGB-250)~#|#~m000081333_sc7
Item: 384616
Model: 4860-WGB-250
No reviews yet
Price is $81.89
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Anthracite Metallic (5365-15-250)~#|#~m000081683_sc7
Item: 385091
Model: 5365-15-250
No reviews yet
Price is $65.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX Square Envelopes, 8-1/2" x 8-1/2", Silver Metallic, 1,000 Envelopes (8575-06-1M)~#|#~m003307876_sc7
Item: 1985002
Model: 8575-06-1M
No reviews yet
Price is $354.49
Unit of measure 1000/Box
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 1000/Box, White - 100% Recycled (4865-WPC-1000)~#|#~m000161365_sc7
Item: 384682
Model: 4865-WPC-1000
No reviews yet
Price is $111.09
Unit of measure 1000/Box
Free delivery by Thu, May 07
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JAM Paper® #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Red Recycled, 50/Pack (356730551I)JAM Paper® #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Red Recycled, 50/Pack (356730551I)
Item: 2329354
Model: 356730551I
No reviews yet
Price is $19.39
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX A8 Foil Lined Invitation Envelopes (5 1/2 x 8 1/8) 500/Box, White w/Silver LUX Lining (FLWH4885-03-500)~#|#~m000082136_sc7
Item: 513792
Model: FLWH4885-03-500
No reviews yet
Price is $148.29
Free delivery by Thu, May 07
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 250/Box, Teal (LUX-1CO-25-250)~#|#~m001149689_sc7
Item: 1029940
Model: LUX-1CO-25-250
No reviews yet
Price is $101.39
Free delivery by Thu, May 07
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JAM Paper 6.125 x 9.5 Booklet Foil Envelopes with Self-Adhesive Closure, Black, 25/Pack (1323282)~#|#~sp137086396_sc7JAM Paper 6.125 x 9.5 Booklet Foil Envelopes with Self-Adhesive Closure, Black, 25/Pack (1323282)~#|#~sp137085714_sc7
Item: 260907
Model: 1323282
No reviews yet
Price is $41.89
Unit of measure 25/Pack
Free delivery by Tue, May 05
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Magenta (EX8535-10-50)~#|#~m000081576_sc7
Item: 282214
Model: EX8535-10-50
No reviews yet
Price is $29.79
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Candy Pink (EX8515-14-50)~#|#~m000081477_sc7
Item: 282108
Model: EX8515-14-50
No reviews yet
Price is $47.09
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX Exclusive Moistenable Glue #10 Invitation Envelopes, 6 1/2" x 6 1/2", Garnet Red, 250/Box (EX8535-26-250)~#|#~m000081569_sc7
Item: 387389
Model: EX8535-26-250
No reviews yet
Price is $108.59
Unit of measure 250/Box
Free delivery by Thu, May 07
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Lux Full Face #10 Window Envelopes, Wasab Green 4 1/8 x9 1/2 inch 50/Pack~#|#~m002084637_sc7
Item: 1559164
Model: FFW-10-L22-50
No reviews yet
Price is $31.09
Delivery by Thu, May 07
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LUX Square Envelopes, 8" x 8", Silver Metallic, 50ct (8565-06-50)~#|#~m003307876_sc7
Item: 1985071
Model: 8565-06-50
No reviews yet
Price is $33.69
Unit of measure 50/Box
Delivery by Thu, May 07
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JAM Paper 4Bar A1 Translucent Vellum Invitation Envelopes, 3.625 x 5.125, Primary Yellow, 50/Pack (1591616I)~#|#~m003904760_sc7JAM Paper 4Bar A1 Translucent Vellum Invitation Envelopes, 3.625 x 5.125, Primary Yellow, 50/Pack (1591616I)~#|#~m003904759_sc7
Item: 1588799
Model: 1591616I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Tue, May 05
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LUX A2 (4 3/8 x 5 3/4) 50/Box, White w/Red LUX Lining (FLWH4870-01-50)~#|#~m000081841_sc7
Item: 282526
Model: FLWH4870-01-50
Price is $20.19
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 6.125 x 9.5 Booklet Foil Envelopes with Peel & Seal Closure, Black, 100/Pack (01323282B)~#|#~sp137085714_sc7
Item: 260959
Model: 01323282B
No reviews yet
Price is $127.99
Unit of measure 100/Box
Free delivery by Tue, May 05
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LUX A8 Foil Lined Invitation Envelopes (5 1/2 x 8 1/8) 50/Box, White w/Silver LUX Lining (FLWH4885-03-50)~#|#~m000082136_sc7
Item: 282891
Model: FLWH4885-03-50
Price is $24.29
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 5 x 5 Square Envelopes, 500/Box, Limelight (LUX-8505-101500)~#|#~m000081527_sc7
Item: 517216
Model: LUX-8505-101500
No reviews yet
Price is $77.79
Free delivery by Thu, May 07
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA367I)~#|#~m003905150_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA367I)~#|#~m003905149_sc7
Item: 1588601
Model: LEBA367I
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Blonde Metallic (4590-M07-50)~#|#~sp12274947_sc7LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Blonde Metallic (4590-M07-50)~#|#~sp14081669_sc7
Item: 24216235
Model: 4590-M07-50
No reviews yet
Price is $33.59
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 1000/Box, White w/Black LUX Lining (FLWH4872-02-100)~#|#~m004940487_sc7LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 1000/Box, White w/Black LUX Lining (FLWH4872-02-100)~#|#~m005823927_sc7
Item: 388439
Model: FLWH4872-02-100
No reviews yet
Price is $143.59
Unit of measure 1000/Box
Free delivery by Thu, May 07
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LUX 6 x 6 Square Envelopes 250/Pack, Citrus (8525-20-250)~#|#~sp14807811_sc7
Item: 24260403
Model: 8525-20-250
No reviews yet
Price is $23.69
Unit of measure 250/Pack
Delivery by Thu, May 07
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Malachite Deep Green, Bulk 250/Box (GCST703H)~#|#~m002168965_sc7
Item: 1590152
Model: GCST703H
No reviews yet
Price is $204.69
Unit of measure 250/Box
Free delivery by Tue, May 05
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JAM Paper 9 x 12 Open End Foil Envelopes with Self-Adhesive Closure, Red Holly, 100/Pack (1333313B)~#|#~m000067492_sc7
Item: 260973
Model: 1333313B
No reviews yet
Price is $158.99
Unit of measure 100/Box
Free delivery by Tue, May 05
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JAM Paper 6 x 6 Square Invitation Envelopes, Dark Purple, 25/Pack (563912522)~#|#~m003905005_sc7JAM Paper 6 x 6 Square Invitation Envelopes, Dark Purple, 25/Pack (563912522)~#|#~m003905004_sc7
Item: 261630
Model: 563912522
No reviews yet
Price is $35.59
Unit of measure 25/Pack
Free delivery by Tue, May 05
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JAM Paper A10 Metallic Invitation Envelopes, 6 x 9.5, Stardream Silver, Bulk 1000/Carton (SD5390 06B)~#|#~m004672469_sc7JAM Paper A10 Metallic Invitation Envelopes, 6 x 9.5, Stardream Silver, Bulk 1000/Carton (SD5390 06B)~#|#~m004672468_sc7
Item: 262067
Model: SD5390 06B
No reviews yet
Price is $1,015.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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JAM Paper 4Bar A1 Translucent Vellum Invitation Envelopes, 3.625 x 5.125, Primary Yellow, Bulk 250/Box (1591616H)~#|#~m003904760_sc7JAM Paper 4Bar A1 Translucent Vellum Invitation Envelopes, 3.625 x 5.125, Primary Yellow, Bulk 250/Box (1591616H)~#|#~m003904759_sc7
Item: 1589349
Model: 1591616H
No reviews yet
Price is $189.99
Unit of measure 250/Box
Free delivery by Tue, May 05
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JAM Paper Square Envelopes, Peel & Press, 3 1/4 x 3 1/4, Sunflower Yellow, 50 Pack (8503-84-50)~#|#~sp228873501_sc7
Item: 24578415
Model: 8503-84-50
No reviews yet
Price is $16.69
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX Open End Open End Window Envelope, 9" x 12", Pool Blue, 250/Pack (LUX1590102-250)~#|#~m001406667_sc7
Item: 1277762
Model: LUX1590102-250
No reviews yet
Price is $114.49
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Vista Metallic (5375-29-50)~#|#~m000081964_sc7
Item: 282676
Model: 5375-29-50
No reviews yet
Price is $24.29
Unit of measure 50/Pack
Delivery by Thu, May 07
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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 Tue, May 05
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Limelight (LUX-4590-101-50)~#|#~sp12274947_sc7LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Limelight (LUX-4590-101-50)~#|#~sp14081688_sc7
Item: 24216127
Model: LUX-4590-101-50
No reviews yet
Price is $24.99
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 6 1/2 x 6 1/2 Square Envelopes 50/Pack, Pool (LUX-8535-102-50)~#|#~sp14807804_sc7
Item: 24260434
Model: LUX-8535-102-50
No reviews yet
Price is $23.09
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Pastel Green (SH4280-04-250)~#|#~m000082065_sc7
Item: 388186
Model: SH4280-04-250
No reviews yet
Price is $51.69
Unit of measure 250/Box
Free delivery by Thu, May 07
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JAM Paper 5 x 5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01209H)~#|#~m003905209_sc7JAM Paper 5 x 5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01209H)~#|#~m003905208_sc7
Item: 1589756
Model: V01209H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Tue, May 05
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, Black Linen (4872-BLI-250)~#|#~m000081688_sc7
Item: 516314
Model: 4872-BLI-250
No reviews yet
Price is $59.99
Free delivery by Thu, May 07
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LUX Double Window Invoice Envelopes (4 1/8 x 9 1/8) 250/Box, Pool (INVDW-102-250)~#|#~m004063893_sc7
Item: 2147441
Model: INVDW-102-250
No reviews yet
Price is $68.99
Unit of measure 250/Pack
Free delivery by Thu, May 07
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Quality Park Self-Adhesive USPS First Class Mailer Envelope, #98, 14-lb., Green/White, 10" x 15", 100/Bx~#|#~s0292999_sc7Quality Park Self-Adhesive USPS First Class Mailer Envelope, #98, 14-lb., Green/White, 10" x 15", 100/Bx~#|#~s0171520_sc7
Item: QUAR1670
Model: QUAR1670
No reviews yet
Price is $156.99
Unit of measure Box
Free delivery by Thu, Apr 30
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Quality Park Survivor Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (QUAR1590)~#|#~sp44490056_sc7Quality Park Survivor Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (QUAR1590)~#|#~sp44490055_sc7
Item: QUAR1590
Model: QUAR1590
No reviews yet
Price is $209.99
Unit of measure Box
Free delivery by Fri, May 01
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Ampad Gold Fibre Fastrip Release & Seal White Catalog Envelope, White, 9 x 12, 100/Box (73127)~#|#~m002272576_sc7
Ampad Gold Fibre Fastrip Release & Seal White Catalog Envelope, White, 9 x 12, 100/Box (73127) is Out of stock
Item: 2669191
Model: 73127
Price is $32.59
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.