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JAM Paper 8.75 x 11.5 Booklet Translucent Vellum Envelopes, Clear, 50/Pack (2851370i)~#|#~sp126919527_sc7JAM Paper 8.75 x 11.5 Booklet Translucent Vellum Envelopes, Clear, 50/Pack (2851370i)~#|#~sp126919526_sc7
Item: 24006070
Model: 2851370I
No reviews yet
Price is $80.99
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 70lb 4 1/8"x9 1/2" Square Flap Linen Envelopes, White, 500/BX~#|#~m000161371_sc7
Item: 513618
Model: 4860-WLI-500
No reviews yet
Price is $107.39
Free delivery by Wed, Feb 18
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LUX Self Seal #10 Business Envelope 4 1/8" x 9 1/2", Magenta, 50/Pack (EX4860-10-50)~#|#~sp14807459_sc7
Item: 24260628
Model: EX4860-10-50
No reviews yet
Price is $22.69
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 5 1/4" x 7 1/4" A7 Invitation Envelopes W/Peel & Press, Limelight Green, 250/BX~#|#~m005902342_sc7LUX 5 1/4" x 7 1/4" A7 Invitation Envelopes W/Peel & Press, Limelight Green, 250/BX~#|#~m005823956_sc7
Item: 388644
Model: LUX-4880-101-25
No reviews yet
Price is $77.59
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX #7 Coin Envelopes (3 1/2 x 6 1/2) 50/Pack, Navy (LUX-7CO-103-50)~#|#~sp14807625_sc7
Item: 24260955
Model: LUX-7CO-103-50
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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Quality Park Open End Catalog Envelopes, 12.5 x 18.5", Brown Kraft, 25/Box (QUA42353)~#|#~sp42804713_sc7Quality Park Open End Catalog Envelopes, 12.5 x 18.5", Brown Kraft, 25/Box (QUA42353)~#|#~sp42804712_sc7
Item: QUA42353
Model: QUA42353
Price is $67.49
Unit of measure Pack
Free delivery by Wed, Feb 11
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LUX Open End Window Envelopes 9" x 12", Midnight Black, 50/Pack (LUX-1590-B-50)~#|#~47100692-5E7F-44D5-86E15271BC52F645_sc7LUX Open End Window Envelopes 9" x 12", Midnight Black, 50/Pack (LUX-1590-B-50)~#|#~E5738B20-8ECF-46CF-81FEB8C280B25D4D_sc7
Item: 1277777
Model: LUX-1590-B-50
No reviews yet
Price is $67.89
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, 50/Pack (191189I)~#|#~m007159173_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, 50/Pack (191189I)~#|#~m007159172_sc7
Item: 1589608
Model: 191189I
Price is $20.49
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes; Candy Pink, 50/Pack~#|#~m000081270_sc7
Item: 281881
Model: EX7716-14-50
No reviews yet
Price is $23.29
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, White - 100% Recycled (4872-WPC-250)~#|#~m000211234_sc7
Item: 516196
Model: 4872-WPC-250
No reviews yet
Price is $50.39
Free delivery by Wed, Feb 18
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Crystal Metallic  (4872-30-50)~#|#~sp14807601_sc7
Item: 24260982
Model: 4872-30-50
Price is $15.39
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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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 Mon, Feb 16
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LUX A2 Envelope - 24lb. White) 1000/Box, Machine Insertable 1000/Box~#|#~m004064012_sc7
Item: 2146360
Model: 80132-MI-1M
No reviews yet
Price is $125.99
Unit of measure 1000/Pack
Free delivery by Wed, Feb 18
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JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, White, 25/Pack (47385)~#|#~sp111772467_sc7JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, White, 25/Pack (47385)~#|#~sp111772466_sc7
Item: 365855
Model: 47385
Price is $9.89
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, Index Booklet, 5.5 x 7.5, Green, 12/Pack (920B1GR)~#|#~m000068457_sc7
Item: 262988
Model: 920B1GR
No reviews yet
Price is $32.09
Unit of measure 12/Pack
Delivery by Mon, Feb 16
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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 Mon, Feb 16
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LUX 7 1/2 x 10 1/2 Booklet Envelopes 50/Pack, 24lb. Bright White (12252-50)~#|#~sp14807339_sc7
Item: 24261328
Model: 12252-50
No reviews yet
Price is $17.29
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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Ship-Lite Self Seal Catalog Envelope 12" x 16", White, 100/Carton (SLE12162WS)~#|#~4F29BD66-2071-459A-9B2D6721BA946139_sc7
Item: 947673
Model: SLE12162WS
Price is $174.89
Unit of measure 100/Carton Price per unit $1.75/Case
Free delivery by Mon, Feb 16
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JAM Paper 6" x 9" Open End Catalog Colored Envelopes with Clasp Closure, Red Recycled, 10/Pack (87881B)~#|#~sp115352059_sc7JAM Paper 6" x 9" Open End Catalog Colored Envelopes with Clasp Closure, Red Recycled, 10/Pack (87881B)~#|#~sp115352058_sc7
Item: 38332
Model: 87881B
Price is $17.09
Unit of measure 10/Pack
Delivery by Mon, Feb 16
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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 Tue, Feb 10
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JAM Paper with Peel & Seal Closure #10 Business Colored Envelopes, 4 1/8" x 9 1/2", Green, 1000/Carton (86555B)~#|#~6D72CF40-FFBC-49D2-943889305B5B19A6_sc7
Item: 261288
Model: 86555B
No reviews yet
Price is $257.09
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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LUX 6 x 6 Square Envelopes 50/Pack, Holiday Green (8525-12-50)~#|#~sp14807666_sc7
Item: 24260569
Model: 8525-12-50
No reviews yet
Price is $13.59
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 10" x 13" 80lbs. Square Flap Open End Envelopes, Midnight Black, 50/Pack~#|#~F94C1052-DA12-4FBB-978D87122F6FC095_sc7LUX 10" x 13" 80lbs. Square Flap Open End Envelopes, Midnight Black, 50/Pack~#|#~F05F8AD4-5D23-47C8-B506EA029BB78E2E_sc7
Item: 282045
Model: 87733-50
No reviews yet
Price is $47.49
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Red Recycled, 50/Pack (67503I)~#|#~sp115352048_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Red Recycled, 50/Pack (67503I)~#|#~sp115352047_sc7
Item: 1588941
Model: 67503I
Price is $15.89
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 25/Pack (203642)~#|#~sp121512130_sc7JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 25/Pack (203642)~#|#~sp121512129_sc7
Item: 262661
Model: 203642
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A7 Booklet Envelope 5 1/4" x 7 1/4", Natural White Linen, 100/Pack (82011d)~#|#~9F7FC299-AA39-4551-BAB8D6D3A8B9807D_sc7JAM Paper A7 Booklet Envelope 5 1/4" x 7 1/4", Natural White Linen, 100/Pack (82011d)~#|#~859EC606-5031-49AB-A7A91FCBA40D7ECA_sc7
JAM Paper A7 Booklet Envelope 5 1/4" x 7 1/4", Natural White Linen, 100/Pack (82011d) is Out of stock
Item: 24604450
Model: 82011d
Price is $22.99
Unit of measure 100/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.