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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 50/Pack (5360-13-50)~#|#~sp228873505_sc7
Item: 24578435
Model: 5360-13-50
Price is $21.79
Unit of measure 50/Pack
Delivery by Fri, Feb 13
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Staples Gummed Inter-Departmental Envelopes, 10" x 13", Multi Colors, 100/Box (SPL487513)~#|#~s1224590_sc7Staples Gummed Inter-Departmental Envelopes, 10" x 13", Multi Colors, 100/Box (SPL487513)~#|#~s1224589_sc7
Item: 487513
Model: ST19845
Price is $29.49
Unit of measure 100/Box
Next-Day Delivery by Mon, Feb 09
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LUX 9 x 12 Booklet Envelopes 50/Pack, Navy (LUX-4899-103-50)~#|#~sp14807514_sc7
Item: 24260921
Model: LUX-4899-103-50
Price is $42.69
Unit of measure 50/Pack
Free delivery by Tue, Feb 17
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JAM Paper Open End #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (6314842I)~#|#~sp74308924_sc7JAM Paper Open End #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Brown Kraft, 50/Pack (6314842I)~#|#~sp74308921_sc7
Item: 1588608
Model: 6314842I
Price is $24.49
Unit of measure 50/Pack
Delivery by Fri, Feb 13
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Vista Metallic (5380-29-50)~#|#~m005902318_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Vista Metallic (5380-29-50)~#|#~m005823980_sc7
Item: 282840
Model: 5380-29-50
No reviews yet
Price is $19.99
Unit of measure 50/Pack
Delivery by Tue, Feb 17
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ComplyRight Self Seal Document Envelope 9" x 12 1/2", White/Green, 100/Pack (1492LL)~#|#~2E8E80FA-3171-4060-B6B347F9A696AACE_sc7ComplyRight Self Seal Document Envelope 9" x 12 1/2", White/Green, 100/Pack (1492LL)~#|#~B8A73450-B20F-4D3B-89168753D8F103F3_sc7
Item: 519753
Model: 1492LL
No reviews yet
Price is $42.59
Unit of measure 100/Pack
Free delivery by Mon, Feb 16
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JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Linen, 25/Pack (66670)~#|#~m007159143_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Linen, 25/Pack (66670)~#|#~m007159142_sc7
Item: 262488
Model: 66670
Price is $11.49
Unit of measure 25/Pack
Delivery by Fri, Feb 13
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JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Wove, 50/Pack (191151I)~#|#~sp112110294_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Wove, 50/Pack (191151I)~#|#~sp112110293_sc7
Item: 1588952
Model: 191151I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Fri, Feb 13
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LUX 4 1/8"x9 1/2" Open End #10 Envelopes, Bright White, 500/BX (7535-500)~#|#~5EC686DA-7AEC-499D-9D9404896C76D77A_sc7LUX 4 1/8"x9 1/2" Open End #10 Envelopes, Bright White, 500/BX (7535-500)~#|#~0C4B9FE1-3B5D-485E-8D78216FC0EADCB0_sc7
Item: 513617
Model: 7535-500
Price is $116.39
Free delivery by Tue, Feb 17
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 4Bar A1, 3.8125 x 5.1875, Clear, 100/Pack (4BARCELLO)~#|#~m000068412_sc7
Item: 262890
Model: 4BARCELLO
No reviews yet
Price is $7.99
Unit of measure 100/Pack
Delivery by Fri, Feb 13
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JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Bright White Wove, 50/Pack (STTW761I)~#|#~m007159125_sc7JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Bright White Wove, 50/Pack (STTW761I)~#|#~m007159124_sc7
Item: 1589242
Model: STTW761I
No reviews yet
Price is $22.19
Unit of measure 50/Pack
Delivery by Fri, Feb 13
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JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Linen, 25/Pack (74083)~#|#~m007159145_sc7JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Linen, 25/Pack (74083)~#|#~m007159144_sc7
Item: 263989
Model: 74083
Price is $11.49
Unit of measure 25/Pack
Delivery by Fri, Feb 13
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LUX 80lbs. 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Peel & Press, Wisteria Purple, 250/BX~#|#~m000082193_sc7
Item: 388681
Model: LUX-4895-106-25
No reviews yet
Price is $91.49
Unit of measure 250/Box
Free delivery by Tue, Feb 17
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JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 25/Pack (439911145)~#|#~sp113368767_sc7JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 25/Pack (439911145)~#|#~sp113368766_sc7
Item: 261295
Model: 439911145
Price is $11.49
Unit of measure 25/Pack
Delivery by Fri, Feb 13
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JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900958831)~#|#~m007159228_sc7JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, 25/Pack (900958831)~#|#~m007159227_sc7
Item: 262535
Model: 900958831
No reviews yet
Price is $33.09
Unit of measure 25/Pack
Delivery by Fri, Feb 13
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LUX 6" x 9" Kraft Open End Envelope, Grocery Bag Brown, 50/Pack (1644-GB-50)~#|#~F595AB30-2837-448C-8AE5C5D2656423A9_sc7LUX 6" x 9" Kraft Open End Envelope, Grocery Bag Brown, 50/Pack (1644-GB-50)~#|#~FE9CA5FA-2A34-41EA-A1C8C4B97761CA9B_sc7
Item: 1985251
Model: 1644-GB-50
No reviews yet
Price is $30.09
Unit of measure 50/Box
Delivery by Tue, Feb 17
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 4" x 6.38", Brown Kraft, 100/Box (QUA37815)~#|#~sp42116464_sc7Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 4" x 6.38", Brown Kraft, 100/Box (QUA37815)~#|#~sp42116463_sc7
Item: 513229
Model: QUA37815
Price is $65.29
Unit of measure 100/Box
Free Next-Day eligible by Mon, Feb 09
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JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243)~#|#~m007159123_sc7JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, 25/Pack (30243)~#|#~m007159122_sc7
Item: 263993
Model: 30243
No reviews yet
Price is $10.89
Unit of measure 25/Pack
Delivery by Fri, Feb 13
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Magenta (EX8515-10-50)~#|#~m000081487_sc7
Item: 282118
Model: EX8515-10-50
No reviews yet
Price is $25.99
Unit of measure 50/Pack
Delivery by Tue, Feb 17
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LUX Slimline Invitation Envelopes (3 7/8 x 8 7/8) 250/Box, 80lb. Bright White (72973-80W-250)~#|#~m001149707_sc7
Item: 1029956
Model: 72973-80W-250
No reviews yet
Price is $126.59
Free delivery by Tue, Feb 17
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 9.25 x 12.25, Clear, 100/Pack (9.25X12.25CELLO)~#|#~m000068422_sc7
Item: 262904
Model: 9.25X12.25CELLO
No reviews yet
Price is $95.99
Unit of measure 100/Pack
Free delivery by Fri, Feb 13
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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, Feb 13
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (67161I)~#|#~sp112110506_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (67161I)~#|#~sp112110505_sc7
Item: 1588624
Model: 67161I
Price is $16.99
Unit of measure 50/Pack
Delivery by Fri, Feb 13
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Quartz Metallic (5380-08-50)~#|#~21E69E6B-67C1-4CDB-BDEE1D60B1EB8306_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Quartz Metallic (5380-08-50)~#|#~ED7D13CC-8813-4FB0-90E95A042E40DE83_sc7
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Quartz Metallic (5380-08-50) is Out of stock
Item: 282816
Model: 5380-08-50
No reviews yet
Price is $20.99
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.