Sponsored Products
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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 Tue, Dec 23
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JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Natural White Wove, Bulk 250/Box (44507H)~#|#~sp132864589_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Natural White Wove, Bulk 250/Box (44507H)~#|#~sp132864588_sc7
Item: 1590123
Model: 44507H
No reviews yet
Price is $77.19
Unit of measure 250/Box
Free delivery by Fri, Dec 19
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LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Box, Holiday Green (67211-50)~#|#~m000081752_sc7
Item: 282880
Model: 67211-50
No reviews yet
Price is $15.19
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Yellow Recycled, 25/Pack (356730557)~#|#~m003757860_sc7JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Yellow Recycled, 25/Pack (356730557)~#|#~m003562845_sc7
Item: 2103401
Model: 356730557
No reviews yet
Price is $16.39
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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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 Tue, Dec 23
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JAM Paper A2 Colored Invitation Envelopes, 4.375 x 5.75, Green Recycled, Bulk 250/Box (15843H)~#|#~sp121512016_sc7JAM Paper A2 Colored Invitation Envelopes, 4.375 x 5.75, Green Recycled, Bulk 250/Box (15843H)~#|#~sp121512015_sc7
Item: 1589290
Model: 15843H
Price is $86.89
Unit of measure 250/Box
Free delivery by Fri, Dec 19
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 250/BX~#|#~m004940398_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Natural, 250/BX~#|#~m005823989_sc7
Item: 384601
Model: 4860-NPC-250
No reviews yet
Price is $102.49
Unit of measure 250/Box
Free delivery by Tue, Dec 23
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 500/Box, Natural - 100% Recycled (4875-NPC-500)~#|#~m000161354_sc7
Item: 384818
Model: 4875-NPC-500
No reviews yet
Price is $93.09
Unit of measure 500/Box
Free delivery by Tue, Dec 23
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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 Tue, Dec 23
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, Mandarin (EX4875-11-250)~#|#~m000081929_sc7
Item: 386514
Model: EX4875-11-250
No reviews yet
Price is $86.79
Unit of measure 250/Box
Free delivery by Tue, Dec 23
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Partners Tyvek Envelopes, 10" x 13", Yellow, 100/Case (TYC1013Y)~#|#~m004079058_sc7
Item: 2301045
Model: TYC1013Y
No reviews yet
Price is $223.29
Unit of measure 100/Carton
Free delivery by Fri, Dec 19
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JAM Paper #1 Coin Envelope, 2 1/4" x 3 1/2", White, 100/Pack (122326658)~#|#~sp95007324_sc7JAM Paper #1 Coin Envelope, 2 1/4" x 3 1/2", White, 100/Pack (122326658)~#|#~m001298996_sc7
Item: 1227828
Model: 122326658
Price is $39.59
Unit of measure 100/Pack
Free delivery by Fri, Dec 19
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, #10 Business Booklet, 5.25 x 10, Lime Green, 12/Pack (921B1LI)~#|#~m004857990_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, #10 Business Booklet, 5.25 x 10, Lime Green, 12/Pack (921B1LI)~#|#~m004857824_sc7
Item: 235328
Model: 921B1LI
No reviews yet
Price is $28.19
Unit of measure 12/Pack Price per unit $2.35/Envelope
Delivery by Fri, Dec 19
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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 Tue, Dec 23
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Dark Grey, 50/Pack (36396435I)~#|#~m004671970_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Dark Grey, 50/Pack (36396435I)~#|#~m004671969_sc7
Item: 1589134
Model: 36396435I
No reviews yet
Price is $19.99
Unit of measure 50/Pack
Delivery by Fri, Dec 19
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LUX 9 x 12 Kraft Open End Envelopes 500/Pack, 24lb. Brown Kraft (8383-500)~#|#~sp14807490_sc7
Item: 24260723
Model: 8383-500
No reviews yet
Price is $63.39
Unit of measure 500/Pack
Free delivery by Tue, Dec 23
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JAM Paper Booklet Envelopes with Peel & Seal Closure, 6 x 11.375, White, 500/Box (367934165)~#|#~sp137085720_sc7
Item: 24295264
Model: 367934165
No reviews yet
Price is $365.49
Unit of measure 500/Pack
Free delivery by Fri, Dec 19
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JAM Paper Invitation Envelope, 13 1/2" x 13 1/2", White, 250/Box (3992323H)~#|#~sp118566188_sc7JAM Paper Invitation Envelope, 13 1/2" x 13 1/2", White, 250/Box (3992323H)~#|#~sp118566187_sc7
Item: 1589827
Model: 3992323H
No reviews yet
Price is $345.59
Unit of measure 250/Box
Free delivery by Fri, Dec 19
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Baby Pink, 25/Pack (155698)~#|#~m000067693_sc7
Item: 261383
Model: 155698
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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JAM Paper Expandable Booklet Envelopes with Peel & Seal Closure, 10 x 12 x 4, White, 250/Box (376634193b)~#|#~sp74203593_sc7JAM Paper Expandable Booklet Envelopes with Peel & Seal Closure, 10 x 12 x 4, White, 250/Box (376634193b)~#|#~sp74203844_sc7
Item: 24295244
Model: 376634193B
No reviews yet
Price is $716.39
Unit of measure 250/Pack
Free delivery by Fri, Dec 19
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JAM Paper #1 Coin Business Colored Envelopes, 2.25 x 3.5, Red Recycled, Bulk 1000/Carton (356730632C)~#|#~sp121512405_sc7JAM Paper #1 Coin Business Colored Envelopes, 2.25 x 3.5, Red Recycled, Bulk 1000/Carton (356730632C)~#|#~sp121512404_sc7
Item: 2103491
Model: 356730632C
No reviews yet
Price is $252.09
Unit of measure 1000/Carton
Free delivery by Fri, Dec 19
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural - 100% Recycled (4880-NPC-50)~#|#~m005902297_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural - 100% Recycled (4880-NPC-50)~#|#~m005823961_sc7
Item: 282790
Model: 4880-NPC-50
No reviews yet
Price is $27.89
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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LUX #10 All Purpose Window EnvelopesEnvelopes(4 1/8 x 9 1/2) 50/Pack, 80lb. Navy (LUX-10APW-10350)~#|#~sp5822112_sc7LUX #10 All Purpose Window EnvelopesEnvelopes(4 1/8 x 9 1/2) 50/Pack, 80lb. Navy (LUX-10APW-10350)~#|#~sp5875507_sc7
Item: 23995473
Model: LUX-10APW-10350
No reviews yet
Price is $20.59
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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LUX 9" x 12" Open End Window Envelopes, Sunflower Yellow (LUX-1590-12-50)~#|#~m001406670_sc7
Item: 1277741
Model: LUX-1590-12-50
No reviews yet
Price is $46.79
Unit of measure 50/Pack
Free delivery by Tue, Dec 23
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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 Fri, Dec 19
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LUX A2 (4 3/8 x 5 3/4) 250/Box, Midnight Black (F-4570-B-250)~#|#~m000081720_sc7
Item: 387502
Model: F-4570-B-250
No reviews yet
Price is $73.29
Unit of measure 250/Box
Free delivery by Tue, Dec 23
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JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, Bulk 250/Box (203642H)~#|#~sp121512302_sc7JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, Bulk 250/Box (203642H)~#|#~sp121512300_sc7
Item: 1589671
Model: 203642H
No reviews yet
Price is $71.69
Unit of measure 250/Box
Free delivery by Fri, Dec 19
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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 Fri, Dec 19
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80 lb 6 1/4" x 6 1/4" Peel & Press Square Envelopes, Midnight Black, 50/Pack~#|#~m001149685_sc7
Item: 1030064
Model: LUX-8530-B-50
No reviews yet
Price is $40.39
Free delivery by Tue, Dec 23
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JAM Paper 6 x 6 Square Invitation Envelopes, Dark Purple, Bulk 1000/Carton (563912522B)~#|#~m003905005_sc7JAM Paper 6 x 6 Square Invitation Envelopes, Dark Purple, Bulk 1000/Carton (563912522B)~#|#~m003905004_sc7
Item: 261642
Model: 563912522B
No reviews yet
Price is $846.99
Unit of measure 1000/Carton
Free delivery by Fri, Dec 19
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LUX Gummed Security Tinted #9 Business Envelopes, 3 7/8" x 8 7/8", White, 1000/Box (61549-1000)~#|#~sp39612763_sc7
Item: 385459
Model: 61549-1000
Price is $110.59
Unit of measure 1000/Box
Free delivery by Tue, Dec 23
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Natural Linen (8515-NLI-50)~#|#~m000081492_sc7
Item: 282123
Model: 8515-NLI-50
No reviews yet
Price is $24.59
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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Partners Brand Tyvek Self Seal #10 Catalog Envelope 9" x 12", White, 100/Carton (TYE09122WE)~#|#~186D4473-8E93-4AB9-9A092BADA077E365_sc7
Item: 947684
Model: TYE09122WE
Price is $236.59
Unit of measure 100/Carton
Free delivery by Fri, Dec 19
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LUX 8" x 8" Square Envelopes, Ruby Red, 500/PK (LUX-8565-18-500)~#|#~m003307875_sc7
Item: 1985049
Model: LUX-8565-18-500
No reviews yet
Price is $251.08
Unit of measure 500/Box
Free delivery by Tue, Dec 23
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 50/Pack (15847I)~#|#~m003904529_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Fuchsia Pink, 50/Pack (15847I)~#|#~m003904528_sc7
Item: 1588564
Model: 15847I
Price is $20.49
Unit of measure 50/Pack
Delivery by Fri, Dec 19
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JAM Paper 5.5 x 7.5 Foil Envelopes with Zip Closure, Gold, 25/Pack (1417050)~#|#~sp20131834_sc7
Item: 24295167
Model: 1417050
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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JAM Paper Specialty Envelope 6 1/2" x 6 1/2", Brown Kraft, 100/Pack (63131150d)~#|#~A5F37896-C061-4121-AB4382150FB621DF_sc7JAM Paper Specialty Envelope 6 1/2" x 6 1/2", Brown Kraft, 100/Pack (63131150d)~#|#~859CCB3A-465C-411F-B202E2954334BD47_sc7
Item: 24604443
Model: 63131150d
No reviews yet
Price is $96.99
Unit of measure 100/Pack
Free delivery by Fri, Dec 19
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Malachite Deep Green, 50/Pack (GCST703I)~#|#~m002168965_sc7
Item: 1589157
Model: GCST703I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Fri, Dec 19
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JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 25/Pack (3156401)~#|#~m003904825_sc7JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 25/Pack (3156401)~#|#~m003904824_sc7
JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 25/Pack (3156401) is Out of stock
Item: 261254
Model: 3156401
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Price is $15.89
Unit of measure 25/Pack
JAM Paper Tear-Proof Open End Catalog Envelopes, 10" x 13", Red, 25/Pack (V021383)~#|#~m003905266_sc7JAM Paper Tear-Proof Open End Catalog Envelopes, 10" x 13", Red, 25/Pack (V021383)~#|#~m003905265_sc7
JAM Paper Tear-Proof Open End Catalog Envelopes, 10" x 13", Red, 25/Pack (V021383) is Out of stock
Item: 261824
Model: V021383
Price is $42.99
Unit of measure 25/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.