JAM Paper #10 Policy Business Envelopes, 4.125 x 9.5, Black Linen, 50/Pack (V01218I)~#|#~m003905223_sc7JAM Paper #10 Policy Business Envelopes, 4.125 x 9.5, Black Linen, 50/Pack (V01218I)~#|#~m003905222_sc7
Item: 1588604
Model: V01218I
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Tue, Dec 16
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LUX 80lb 4 1/8"x9 1/2" Square Flap Metallic #10 Envelopes, Silver, 500/BX~#|#~m004940415_sc7LUX 80lb 4 1/8"x9 1/2" Square Flap Metallic #10 Envelopes, Silver, 500/BX~#|#~m005823916_sc7
Item: 516498
Model: 5360-06-500
No reviews yet
Price is $144.49
Free delivery by Thu, Dec 18
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Smoke (EX4875-22-50)~#|#~m000081953_sc7
Item: 282663
Model: EX4875-22-50
No reviews yet
Price is $22.09
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Citrus (FE4280-20-50)~#|#~m005902340_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Citrus (FE4280-20-50)~#|#~m005823944_sc7
Item: 282747
Model: FE4280-20-50
Price is $23.89
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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JAM Paper Booklet Envelopes, 9" x 12", Navy Blue, 500/Box (263916011d)~#|#~sp121512566_sc7JAM Paper Booklet Envelopes, 9" x 12", Navy Blue, 500/Box (263916011d)~#|#~sp121512565_sc7
Item: 2478159
Model: 263916011D
No reviews yet
Price is $327.99
Unit of measure 500/Box
Free delivery by Tue, Dec 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 Thu, Dec 18
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LUX 5 x 5 Square Envelopes, 50/Box, Natural Linen (8505-NLI-50)~#|#~m000081492_sc7
Item: 282163
Model: 8505-NLI-50
No reviews yet
Price is $38.59
Unit of measure 50/Pack
Free delivery by Thu, Dec 18
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Silver Metallic (5365-06-50)~#|#~m000081736_sc7
Item: 282400
Model: 5365-06-50
No reviews yet
Price is $26.59
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Ultra Fuchsia Pink, 25/Pack (356730545)~#|#~sp115352069_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Ultra Fuchsia Pink, 25/Pack (356730545)~#|#~sp115352067_sc7
Item: 2103437
Model: 356730545
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Seafoam (LUX-4872-113-50)~#|#~m000081873_sc7
Item: 282562
Model: LUX-4872-113-50
No reviews yet
Price is $24.39
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
LUX Open End Envelopes 9" x 12", Navy Blue~#|#~m001406668_sc7
Item: 1277799
Model: LUX-1590-103-1M
No reviews yet
Price is $480.69
Unit of measure 1000/Box
Free delivery by Thu, Dec 18
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JAM Paper #11 Policy Business Envelopes, 4.5 x 10.375, White, Bulk 500/Box (1623187H)~#|#~sp123308118_sc7JAM Paper #11 Policy Business Envelopes, 4.5 x 10.375, White, Bulk 500/Box (1623187H)~#|#~sp123308117_sc7
Item: 1589896
Model: 1623187H
No reviews yet
Price is $227.99
Unit of measure 500/Box
Free delivery by Tue, Dec 16
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JAM Paper 10 x 13 Open End Catalog Envelopes, Presidential Blue, 50/Pack (263919489i)~#|#~sp12489291_sc7JAM Paper 10 x 13 Open End Catalog Envelopes, Presidential Blue, 50/Pack (263919489i)~#|#~sp12489290_sc7
Item: 24175155
Model: 263919489I
No reviews yet
Price is $63.49
Unit of measure 50/Pack
Free delivery by Tue, Dec 16
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Over 30
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m004940462_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m005824005_sc7
Item: 386342
Model: EX4860-22-250
No reviews yet
Price is $54.59
Unit of measure 250/Box
Free delivery by Thu, Dec 18
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Over 30
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Bronze Metallic, 250/BX~#|#~m004940419_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Bronze Metallic, 250/BX~#|#~m005823903_sc7
Item: 384997
Model: 5360-12-250
No reviews yet
Price is $104.91
Unit of measure 250/Box
Free delivery by Thu, Dec 18
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JAM Paper 4 x 5.5 Booklet Foil Envelopes with Self-Adhesive Closure, Gold, 25/Pack (1324894)~#|#~sp20131918_sc7
Item: 24295163
Model: 1324894
No reviews yet
Price is $32.99
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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Over 30
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Pack, Blush (LUX-4865-39-50)~#|#~sp5822112_sc7LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Pack, Blush (LUX-4865-39-50)~#|#~F88DF324-EA76-4780-89DDBA876EB8A008_sc7
Item: 23996538
Model: LUX-4865-39-50
No reviews yet
Price is $27.49
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, 25/Pack (2792291)~#|#~m002934107_sc7JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, 25/Pack (2792291)~#|#~m002934106_sc7
Item: 235558
Model: 2792291
No reviews yet
Price is $26.69
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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Over 30
LUX 12 1/2 x 18 1/2 Kraft Jumbo Envelopes 250/Pack, Gray Kraft (92532-250)~#|#~sp14807712_sc7
Item: 24260533
Model: 92532-250
No reviews yet
Price is $223.59
Unit of measure 250/Pack
Free delivery by Thu, Dec 18
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Over 30
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Lilac (SH4280-05-250)~#|#~m005902349_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Lilac (SH4280-05-250)~#|#~m005823955_sc7
Item: 388191
Model: SH4280-05-250
No reviews yet
Price is $67.09
Unit of measure 250/Box
Free delivery by Thu, Dec 18
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Over 30
LUX 9 x 9 Square Envelopes, 50/Box, Clear Translucent (8585-50-50)~#|#~m000081665_sc7
Item: 282322
Model: 8585-50-50
No reviews yet
Price is $35.10
Unit of measure 50/Pack
Free delivery by Thu, Dec 18
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Over 30
LUX #7 Coin Envelopes (3 1/2 x 6 1/2) 50/Pack, Limelight (LUX-7CO-101-50)~#|#~sp14807797_sc7
Item: 24261304
Model: LUX-7CO-101-50
No reviews yet
Price is $21.09
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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LUX 6" x 9" Button & String Envelopes, 250/Box, 28lb. White (69BS-28W-250)~#|#~9C0937C6-20D2-42CE-9EC535B9A8DA2C4D_sc7LUX 6" x 9" Button & String Envelopes, 250/Box, 28lb. White (69BS-28W-250)~#|#~DB475B35-5E4C-4B00-A66FA32D774B448C_sc7
Item: 2444631
Model: 69BS-28W-250
No reviews yet
Price is $219.68
Unit of measure 250/Pack
Free delivery by Thu, Dec 18
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Over 30
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Blush (4872-114B-50)~#|#~sp5822112_sc7LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Blush (4872-114B-50)~#|#~sp5874352_sc7
Item: 23996049
Model: 4872-114B-50
No reviews yet
Price is $18.19
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
LUX 6 1/2 x 6 1/2 Square Envelopes, 1000/Box, 70lb. Bright White (10928-1000)~#|#~m000081546_sc7
Item: 516613
Model: 10928-1000
No reviews yet
Price is $140.39
Free delivery by Thu, Dec 18
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Over 30
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, Sunflower (EX4875-12-250)~#|#~m000081956_sc7
Item: 386526
Model: EX4875-12-250
No reviews yet
Price is $89.19
Unit of measure 250/Box
Free delivery by Thu, Dec 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Natural - 100% Recycled (4880-NPC-1000)~#|#~m005902297_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Natural - 100% Recycled (4880-NPC-1000)~#|#~m000082049_sc7
Item: 516137
Model: 4880-NPC-1000
No reviews yet
Price is $247.19
Free delivery by Thu, Dec 18
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Over 30
JAM Paper 9 x 12 Booklet Envelopes, Teal, 25/Pack (272316030)~#|#~m003904974_sc7JAM Paper 9 x 12 Booklet Envelopes, Teal, 25/Pack (272316030)~#|#~m003904973_sc7
Item: 362725
Model: 272316030
No reviews yet
Price is $26.09
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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Over 30
LUX A2 (4 3/8 x 5 3/4) 50/Box, Clear Translucent (4870-00-50)~#|#~m000081697_sc7
Item: 282445
Model: 4870-00-50
No reviews yet
Price is $23.35
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Gold, 25/Pack (PACV867)~#|#~m003905199_sc7JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Gold, 25/Pack (PACV867)~#|#~m003905198_sc7
Item: 262252
Model: PACV867
No reviews yet
Price is $36.99
Unit of measure 25/Pack
Free delivery by Tue, Dec 16
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Over 30
JAM Paper® Plastic Envelopes with Button and String Tie Closure, #10 Business Booklet, 5.25 x 10, Black, 108/Pack (921B1BLB)~#|#~m005744815_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, #10 Business Booklet, 5.25 x 10, Black, 108/Pack (921B1BLB)~#|#~m000067462_sc7
Item: 260881
Model: 921B1BLB
No reviews yet
Price is $211.79
Unit of measure 108/Box
Free delivery by Tue, Dec 16
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Over 30
JAM Paper Cellophane Envelope with Self-Adhesive Closure, 5.0625 x 7.1875, Purple, 100/Pack (2785510)~#|#~m000969560_sc7
Item: 235642
Model: 2785510
No reviews yet
Price is $48.99
Unit of measure 100/Pack
Free delivery by Tue, Dec 16
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Over 30
LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, White w/Black LUX Lining (FLWH4872-02-50)~#|#~m004940487_sc7LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, White w/Black LUX Lining (FLWH4872-02-50)~#|#~m005823927_sc7
Item: 282571
Model: FLWH4872-02-50
No reviews yet
Price is $13.29
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
LUX 5 x 5 Square Envelopes, 50/Box, Black Linen (8505-BLI-50)~#|#~m000081520_sc7
Item: 282151
Model: 8505-BLI-50
No reviews yet
Price is $21.76
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
LUX 5 x 5 Square Envelopes, 50/Box, Limelight (LUX-8505-101-50)~#|#~m000081527_sc7
Item: 282158
Model: LUX-8505-101-50
Price is $18.89
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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Over 30
JAM Paper 6.5" x 6.5" Square Translucent Vellum Invitation Envelopes, Purple, 100/Pack (2812713B)~#|#~sp74308907_sc7JAM Paper 6.5" x 6.5" Square Translucent Vellum Invitation Envelopes, Purple, 100/Pack (2812713B)~#|#~sp74308931_sc7
Item: 38071
Model: 2812713B
No reviews yet
Price is $64.99
Unit of measure 100/Pack
Free delivery by Tue, Dec 16
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Over 30
JAM Paper A8 Foil Lined Invitation Envelopes, 5.5 x 8.125, White with Red Foil, 50/Pack (3243657I)~#|#~m005223351_sc7JAM Paper A8 Foil Lined Invitation Envelopes, 5.5 x 8.125, White with Red Foil, 50/Pack (3243657I)~#|#~m005223350_sc7
Item: 1589168
Model: 3243657I
No reviews yet
Price is $24.29
Unit of measure 50/Pack
Delivery by Tue, Dec 16
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Over 30
JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 25/Pack (155629)~#|#~m005706328_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 25/Pack (155629)~#|#~m007065549_sc7
Item: 261382
Model: 155629
Price is $17.09
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Gray, 250/Pack (WS-7615-250)~#|#~949DF982-4459-4531-B384BBFC09218AED_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Gray, 250/Pack (WS-7615-250)~#|#~B4322885-8592-4CBC-98CCBE5C757B0D37_sc7
Item: 23996542
Model: WS-7615-250
No reviews yet
Price is $58.49
Unit of measure 250/Pack
Free delivery by Thu, Dec 18
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Gold Metallic, 1000/BX~#|#~m004940416_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Gold Metallic, 1000/BX~#|#~m005823910_sc7
Item: 384975
Model: 5360-07-1000
No reviews yet
Price is $299.49
Unit of measure 1000/Box
Free delivery by Thu, Dec 18
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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.