Sponsored Products
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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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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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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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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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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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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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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 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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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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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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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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JAM Paper 9 x 12 Open End Catalog Foil Envelopes with Self-Adhesive Closure, Blue with White Snowflakes, 100/Pack (01323320B)~#|#~m000141500_sc7
Item: 363390
Model: 01323320B
No reviews yet
Price is $158.69
Unit of measure 100/Box
Free delivery by Tue, Dec 16
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JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Ruby Purple, 25/Pack (GCST604)~#|#~m000068034_sc7
Item: 262013
Model: GCST604
No reviews yet
Price is $21.99
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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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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70 lb 5 3/4" x 5 3/4" Peel & Press Square Envelopes, Bright White, 50/Pack~#|#~m001149702_sc7
Item: 1030023
Model: 8520-70W-50
Price is $29.89
Delivery by Thu, Dec 18
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LUX A7 Full Face Window Envelopes, Grocery Bag Brown, 1000/Pack (A7FFW-GB-1M)~#|#~m003307941_sc7
Item: 1984836
Model: A7FFW-GB-1M
No reviews yet
Price is $193.68
Unit of measure 1000/Box
Free delivery by Thu, Dec 18
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JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 25/Pack (900840420)~#|#~m006965529_sc7JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 25/Pack (900840420)~#|#~m006965528_sc7
Item: 262138
Model: 900840420
No reviews yet
Price is $38.49
Unit of measure 25/Pack
Free delivery by Tue, Dec 16
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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, Dec 16
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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 $82.28
Unit of measure 250/Pack
Free delivery by Thu, Dec 18
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 5.0625 x 7.1875, Green, 100/Pack (2783135)~#|#~m000969557_sc7
Item: 235573
Model: 2783135
No reviews yet
Price is $48.99
Unit of measure 100/Pack
Free delivery by Tue, Dec 16
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JAM Paper #10 Business Foil Envelopes with Peel & Seal Closure, 4 1/8" x 9 1/2", Silver, 25/Pack (1323306)~#|#~m004671920_sc7JAM Paper #10 Business Foil Envelopes with Peel & Seal Closure, 4 1/8" x 9 1/2", Silver, 25/Pack (1323306)~#|#~m004671919_sc7
Item: 260896
Model: 1323306
No reviews yet
Price is $41.89
Unit of measure 25/Pack
Free delivery by Tue, Dec 16
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Pack, Natural Linen (4865-NLI-50)~#|#~sp14807598_sc7
Item: 24260728
Model: 4865-NLI-50
Price is $15.19
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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LUX 9" x 12" Open End Window Envelopes, Mandarin Orange (LUX-1590-11-50)~#|#~m001406669_sc7
Item: 1277742
Model: LUX-1590-11-50
No reviews yet
Price is $58.39
Unit of measure 50/Pack
Free delivery by Thu, Dec 18
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JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 100/Pack (900840420C)~#|#~m006965529_sc7JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 100/Pack (900840420C)~#|#~m006965528_sc7
Item: 261771
Model: 900840420C
No reviews yet
Price is $129.89
Unit of measure 100/Box
Free delivery by Tue, Dec 16
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 50/Pack (155629I)~#|#~m005706328_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 50/Pack (155629I)~#|#~m007065549_sc7
Item: 1589137
Model: 155629I
No reviews yet
Price is $26.49
Unit of measure 50/Pack
Delivery by Tue, Dec 16
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Natural White - 100% Cotton (4865-SN-250)~#|#~m000161368_sc7
Item: 384671
Model: 4865-SN-250
No reviews yet
Price is $72.09
Unit of measure 250/Box
Free delivery by Thu, Dec 18
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Quality Park Survivor Tyvek Self Seal Catalog Envelope, 10" x 15", White, 100/Carton (QUAR4450)~#|#~m000015900_sc7
Item: 2622379
Model: QUAR4450
No reviews yet
Price is $317.29
Unit of measure 100/Carton
Free delivery by Thu, Dec 11
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LUX A7 Z-Fold Invitation (5 x 7) 10/Pack, Navy (LUXA7ZF-103-10)~#|#~sp14807949_sc7
Item: 24261021
Model: LUXA7ZF-103-10
No reviews yet
Price is $12.69
Unit of measure 10/Pack
Delivery by Thu, Dec 18
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JAM Paper 6 x 6 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792267I)~#|#~m003904795_sc7JAM Paper 6 x 6 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792267I)~#|#~m003904794_sc7
Item: 1588518
Model: 2792267I
No reviews yet
Price is $49.99
Unit of measure 50/Pack
Free delivery by Tue, Dec 16
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JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 50/Pack (900858534i)~#|#~m007162596_sc7JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Bright White Wove, 50/Pack (900858534i)~#|#~m007162595_sc7
Item: 24006146
Model: 900858534I
No reviews yet
Price is $56.39
Unit of measure 50/Pack
Free delivery by Tue, Dec 16
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LUX 3 1/4 x 3 1/4 Square 50/Pack, Navy (8503-103-50)~#|#~sp14807977_sc7
Item: 24260184
Model: 8503-103-50
No reviews yet
Price is $12.79
Unit of measure 50/Pack
Delivery by Thu, Dec 18
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JAM Paper Peel & Seal Open End #13 Catalog Envelope, 10" x 13", White, 100/Pack (376634184B)~#|#~sp74203708_sc7JAM Paper Peel & Seal Open End #13 Catalog Envelope, 10" x 13", White, 100/Pack (376634184B)~#|#~sp74203800_sc7
Item: 24295232
Model: 376634184B
No reviews yet
Price is $257.29
Unit of measure 100/Pack
Free delivery by Tue, Dec 16
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Dark Green, 50/Pack (157459i)~#|#~sp137085983_sc7
Item: 24006047
Model: 157459I
No reviews yet
Price is $29.89
Unit of measure 50/Pack
Delivery by Tue, Dec 16
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LUX 70lbs. 4 3/4" x 6 1/2" A6 Invitation Envelopes W/Peel & Press, Natural/Gold LUX~#|#~m000081933_sc7
Item: 388368
Model: FLNT4875-04-100
No reviews yet
Price is $194.89
Unit of measure 1000/Box
Free delivery by Thu, Dec 18
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Presidential Blue, 25/Pack (263912999)~#|#~sp137085032_sc7
Item: 261135
Model: 263912999
Price is $14.89
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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JAM Paper 6.5 x 6.5 Square Invitation Envelopes, Tan Brown, 25/Pack (227914986)~#|#~sp4808507_sc7
Item: 2632863
Model: 227914986
Price is $25.99
Unit of measure 25/Pack
Delivery by Tue, Dec 16
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Universal Gummed Kraft Catalog Envelope, 10" x 13", Light Brown, 250/Box (UNV44105)~#|#~sp4614075_sc7
Universal Gummed Kraft Catalog Envelope, 10" x 13", Light Brown, 250/Box (UNV44105) is Out of stock
Item: 2598456
Model: 44105
No reviews yet
Price is $84.99
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.