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JAM Paper 9 x 12 Open End Catalog Envelopes, Aqua Blue, 25/Pack (31287530)~#|#~sp61031353_sc7JAM Paper 9 x 12 Open End Catalog Envelopes, Aqua Blue, 25/Pack (31287530)~#|#~sp61031274_sc7
Item: 361974
Model: 31287530
No reviews yet
Price is $34.09
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Brown, 25/Pack (V01722)~#|#~sp137084310_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Brown, 25/Pack (V01722)~#|#~sp137084266_sc7
Item: 261870
Model: V01722
No reviews yet
Price is $18.69
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388)~#|#~sp61031269_sc7JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388)~#|#~sp61031267_sc7
Item: 261829
Model: V021388
No reviews yet
Price is $73.19
Unit of measure 25/Pack
Free delivery by Mon, Feb 16
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218)~#|#~m003905223_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Black Linen, 25/Pack (V01218)~#|#~m003905222_sc7
Item: 261584
Model: V01218
Price is $12.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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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 Mon, Feb 16
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LUX 6.5" x 9.5" Open End Envelopes 500/Pack, Midnight Black (LUX-1645-56-500)~#|#~sp5822112_sc7LUX 6.5" x 9.5" Open End Envelopes 500/Pack, Midnight Black (LUX-1645-56-500)~#|#~65AC12BF-FC0B-4506-B4D699CA2631EC18_sc7
Item: 23996463
Model: LUX-1645-56-500
No reviews yet
Price is $123.56
Unit of measure 500/Pack
Free delivery by Wed, Feb 18
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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 Mon, Feb 16
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Ultra Lime Green, Bulk 250/Box (52610H)~#|#~m003904596_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Ultra Lime Green, Bulk 250/Box (52610H)~#|#~m003904595_sc7
Item: 1589034
Model: 52610H
No reviews yet
Price is $73.39
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, White w/Black LUX Lining (FLWH4880-02-50)~#|#~m000082097_sc7
Item: 282844
Model: FLWH4880-02-50
Price is $35.69
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX #5 1/2 Kraft Coin Envelopes (3 1/8 x 5 1/2) 250/Pack, 28lb. Gray Kraft (512CO-28GK-250)~#|#~D2C83030-76AC-4F7F-8FBEC149A7784303_sc7LUX #5 1/2 Kraft Coin Envelopes (3 1/8 x 5 1/2) 250/Pack, 28lb. Gray Kraft (512CO-28GK-250)~#|#~A2836B8F-A2B7-412F-B738A0933F1B9BDD_sc7
Item: 24261027
Model: 512CO-28GK-250
No reviews yet
Price is $43.49
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Avocado (EX8535-27-50)~#|#~m000081550_sc7
Item: 282184
Model: EX8535-27-50
No reviews yet
Price is $29.69
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Peel & Press, Vintage Plum Purple, 50/Pack~#|#~m000082186_sc7
Item: 282952
Model: LUX-4895-104-50
No reviews yet
Price is $29.61
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX 9" x 12" Open End Envelopes 50/Pack, Holiday Red (FE-7280-15-50)~#|#~1545E97C-9626-4699-B4BD104AFB483B6F_sc7
Item: 24261137
Model: FE-7280-15-50
No reviews yet
Price is $36.79
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 25/Pack (191249)~#|#~m007063366_sc7JAM Paper #10 Policy Business Strathmore Envelopes, 4.125 x 9.5, Natural White Wove, 25/Pack (191249)~#|#~m007049471_sc7
Item: 262548
Model: 191249
Price is $14.89
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A10 Foil Lined Invitation Envelopes, 6 x 9.5, White with Silver Foil, 25/Pack (900905601)~#|#~m004672036_sc7JAM Paper A10 Foil Lined Invitation Envelopes, 6 x 9.5, White with Silver Foil, 25/Pack (900905601)~#|#~m004672035_sc7
Item: 262775
Model: 900905601
Price is $14.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX Open End Kraft Envelopes 9" x 12", Citrus Yellow (LUX-1590-L20-1M)~#|#~7F50247A-AEC0-4B93-9EE250D3025251FA_sc7LUX Open End Kraft Envelopes 9" x 12", Citrus Yellow (LUX-1590-L20-1M)~#|#~FE40EA6D-387C-465C-887497438F515285_sc7
Item: 1277791
Model: LUX-1590-L20-1M
No reviews yet
Price is $402.89
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 25/Pack (356730549)~#|#~m003757871_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 25/Pack (356730549)~#|#~m003562857_sc7
Item: 2103445
Model: 356730549
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Glue, Jupiter Metallic Red Red, 50/Pack~#|#~m000082163_sc7
Item: 282925
Model: 5395-20-50
Price is $34.79
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 50/Pack (28415I)~#|#~m007049349_sc7JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, 50/Pack (28415I)~#|#~m007049348_sc7
Item: 1588512
Model: 28415I
Price is $38.39
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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JAM Paper 10 x 13 Open End Catalog Colored Envelopes, Orange Recycled, 50/Pack (87766i)~#|#~sp12489312_sc7JAM Paper 10 x 13 Open End Catalog Colored Envelopes, Orange Recycled, 50/Pack (87766i)~#|#~sp12489311_sc7
Item: 24175054
Model: 87766I
Price is $45.19
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX A7 Full-Face Window Envelopes, Grocery Bag Brown, 50/PK (A7FFW-GB-50)~#|#~m003307941_sc7
Item: 1984833
Model: A7FFW-GB-50
Price is $43.09
Unit of measure 50/Box
Free delivery by Wed, Feb 18
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LUX 80lb 5 3/4"x8 3/4" A9 Invitation Envelopes W/Peel&Press, Wisteria Purple, 500/BX~#|#~m000082193_sc7
Item: 517568
Model: LUX-4895-106500
Price is $117.79
Free delivery by Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) 500/Box, Ruby Red (EX4870-18-500)~#|#~m000081820_sc7
Item: 514410
Model: EX4870-18-500
No reviews yet
Price is $100.89
Free delivery by Wed, Feb 18
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LUX 80lbs. 3 5/8" x 5 1/8" A1 RSVP, Invitation Envelopes W/Peel & Press, Pool Blue, 250/BX~#|#~m000081726_sc7
Item: 388519
Model: LUX-4865-102-25
No reviews yet
Price is $46.59
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 50/Pack (203642I)~#|#~sp121512226_sc7JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 50/Pack (203642I)~#|#~sp121512224_sc7
Item: 1588444
Model: 203642I
Price is $20.49
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Red, 25/Pack (67161)~#|#~sp112110506_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Red, 25/Pack (67161)~#|#~sp112110505_sc7
Item: 260833
Model: 67161
Price is $20.49
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Navy Blue, 25/Pack (LEBA767)~#|#~m003905160_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Navy Blue, 25/Pack (LEBA767)~#|#~m003905159_sc7
Item: 261702
Model: LEBA767
Price is $16.39
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Yellow Recycled, 50/Pack (96334I)~#|#~m003904700_sc7JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Yellow Recycled, 50/Pack (96334I)~#|#~m003904699_sc7
Item: 1589209
Model: 96334I
No reviews yet
Price is $22.69
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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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
No reviews yet
Price is $15.89
Unit of measure 25/Pack
LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Peel & Press, Copper Metallic, 50/Pack~#|#~m000081698_sc7
LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Peel & Press, Copper Metallic, 50/Pack is Out of stock
Item: 282914
Model: 5395-11-50
No reviews yet
Price is $28.49
Unit of measure 50/Pack
JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 50/Pack (3156401I)~#|#~m003904825_sc7JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 50/Pack (3156401I)~#|#~m003904824_sc7
JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Blue Recycled, 50/Pack (3156401I) is Out of stock
Item: 1588537
Model: 3156401I
No reviews yet
Price is $28.19
Unit of measure 50/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.