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LUX Currency Envelopes (2 7/8 x 6 1/2) 50/Box, Christmas Trees (CUR-97-50)~#|#~m000082201_sc7
Item: 282967
Model: CUR-97-50
Price is $23.19
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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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 Self Seal Invitation Envelope 8 1/2" x 8 1/2", Natural, 50/Pack (8575-03-50)~#|#~449EB9A2-1512-4D5F-84502DA81A1305D5_sc7JAM Paper Self Seal Invitation Envelope 8 1/2" x 8 1/2", Natural, 50/Pack (8575-03-50)~#|#~525B2C2B-E135-4444-9D626E99B55C5509_sc7
Item: 24604535
Model: 8575-03-50
No reviews yet
Price is $17.39
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Lime Green, 12/Pack (1221566)~#|#~m004858019_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Lime Green, 12/Pack (1221566)~#|#~m004857853_sc7
Item: 263045
Model: 1221566
Price is $38.39
Unit of measure 12/Pack Price per unit $3.20/Envelope
Free delivery by Mon, Feb 16
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes W/Glue, Gold Metallic, 250/BX~#|#~m004940416_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes W/Glue, Gold Metallic, 250/BX~#|#~m005823910_sc7
Item: 384977
Model: 5360-07-250
Price is $106.49
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Leaf Green, 25/Pack (PACV853)~#|#~m000068067_sc7
Item: 262180
Model: PACV853
Price is $37.29
Unit of measure 25/Pack
Free delivery by Mon, Feb 16
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Fairway Metallic (5380-25-250)~#|#~m005902316_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Fairway Metallic (5380-25-250)~#|#~m000082022_sc7
Item: 515480
Model: 5380-25-250
No reviews yet
Price is $120.34
Free delivery by Wed, Feb 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 Wed, Feb 18
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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 $36.69
Unit of measure 50/Box
Free delivery by Wed, Feb 18
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Pack, Blonde Metallic (4872-M07-250)~#|#~sp14807620_sc7
Item: 24260656
Model: 4872-M07-250
No reviews yet
Price is $75.29
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Wisteria (LUX-4865-106-50)~#|#~m000081748_sc7
Item: 282412
Model: LUX-4865-106-50
No reviews yet
Price is $18.59
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Sunflower (EX8515-12-50)~#|#~m000081501_sc7
Item: 282132
Model: EX8515-12-50
No reviews yet
Price is $32.39
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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80 lb 5 3/4" x 5 3/4" Peel & Press Square Envelopes, Navy Blue, 50/Pack~#|#~m001149720_sc7
Item: 1029931
Model: LUX-8520-103-50
Price is $22.09
Delivery by Wed, Feb 18
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Lilac (SH4265-05-250)~#|#~m000081716_sc7
Item: 513662
Model: SH4265-05-250
No reviews yet
Price is $66.99
Free delivery by Wed, Feb 18
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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 Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) - Metallics - Champagne 50/Pack, Champagne Metallic (5370-M08-50)~#|#~sp14807665_sc7
Item: 24260595
Model: 5370-M08-50
No reviews yet
Price is $13.19
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 250/Pack (5360-13-250)~#|#~sp228873252_sc7
Item: 24578290
Model: 5360-13-250
No reviews yet
Price is $76.19
Unit of measure 250/Pack
Free delivery by Mon, Feb 16
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Quality Park Gummed Booklet Envelope, 9 1/2" x 11 7/8", Beige, 100/Box (89604)~#|#~s0055705_sc7Quality Park Gummed Booklet Envelope, 9 1/2" x 11 7/8", Beige, 100/Box (89604)~#|#~s0066917_sc7
Item: QUA89604
Model: QUA89604
No reviews yet
Price is $164.00
Unit of measure Box
Free delivery by Wed, Feb 11
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Mandarin (EX4880-11-500)~#|#~m005902327_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Mandarin (EX4880-11-500)~#|#~m000082046_sc7
Item: 514281
Model: EX4880-11-500
No reviews yet
Price is $181.59
Free delivery by Wed, Feb 18
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JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Red Recycled, 25/Pack (2794374)~#|#~m002934119_sc7JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Red Recycled, 25/Pack (2794374)~#|#~m002934118_sc7
Item: 260832
Model: 2794374
No reviews yet
Price is $27.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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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 Wed, Feb 18
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JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Gold, 25/Pack (GCST608)~#|#~m003905132_sc7JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Gold, 25/Pack (GCST608)~#|#~m003905131_sc7
Item: 261966
Model: GCST608
Price is $24.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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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 Mon, Feb 16
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LUX Open End Window Envelopes  9" x 12", Midnight Black, 500/Box (LUX-1590-B-500)~#|#~BE5114D9-97C7-4F9C-853BC435D6AE75D2_sc7LUX Open End Window Envelopes  9" x 12", Midnight Black, 500/Box (LUX-1590-B-500)~#|#~32A67FD9-DC3A-422A-B0C2565D43D26DBF_sc7
Item: 1277772
Model: LUX-1590-B-500
No reviews yet
Price is $178.29
Unit of measure 500/Box
Free delivery by Wed, Feb 18
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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 Mon, Feb 16
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LUX 5 x 5 Square Envelopes, 50/Box, Vintage Plum (LUX-8505-104-50)~#|#~m000081534_sc7
Item: 282168
Model: LUX-8505-104-50
No reviews yet
Price is $17.99
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Candy Pink, 500/Pack (8510-14-500)~#|#~sp225303058_sc7JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Candy Pink, 500/Pack (8510-14-500)~#|#~sp225303057_sc7
Item: 24578437
Model: 8510-14-500
No reviews yet
Price is $95.32
Unit of measure 500/Pack
Free delivery by Mon, Feb 16
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Vintage Plum (LUX-4880-104500)~#|#~m005902345_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Vintage Plum (LUX-4880-104500)~#|#~m005823979_sc7
Item: 517473
Model: LUX-4880-104500
No reviews yet
Price is $197.49
Free delivery by Wed, Feb 18
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Lux Double Window Invoice Envelopes, 4 1/8 x 9 1/2, Wasabi 250/Pack~#|#~m002084679_sc7
Item: 1559170
Model: INVDW-L22-250
No reviews yet
Price is $91.49
Free delivery by Wed, Feb 18
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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 Wed, Feb 18
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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 $31.79
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.