Sponsored Products
Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)~#|#~s1223633_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)~#|#~s1223639_sc7
13% off of Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)
Item: 787385
Model: ST50312-CC
Price is $24.99Regular price was $28.79, You save 13%
Unit of measure 500/Box Price per unit $0.05/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50308-CC)~#|#~04BF5D88-0DCB-4C46-8A97D67F61C726B8_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50308-CC)~#|#~F7FF46B5-6BB8-466E-99786E7BF515AACC_sc7
Item: 394057
Model: ST50308-CC
Price is $10.49
Unit of measure 100/Box Price per unit $0.10/Envelope
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Staples QuickStrip EasyClose Kraft Self Seal Catalog Envelopes, 9" x 12", Brown, 100/Box (ST381970-CC)~#|#~s1224480_sc7Staples QuickStrip EasyClose Kraft Self Seal Catalog Envelopes, 9" x 12", Brown, 100/Box (ST381970-CC)~#|#~s1224481_sc7
11% off of Staples QuickStrip EasyClose Kraft Self Seal Catalog Envelopes, 9" x 12", Brown, 100/Box (ST381970-CC)
Item: 381970
Model: ST381970-CC
Price is $19.99, Regular price was $22.49, You save 11%
Unit of measure 100/Box Price per unit $0.20/Envelope
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Quality Park Clasp Nonstandard Kraft Catalog Envelope, 10" x 13", Light Kraft, 100/Box (QUA38197)~#|#~s0171283_sc7
Item: 813547
Model: QUA38197
Price is $56.49
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9" x 12", White, 100/Box (ST379479-CC)~#|#~8B7D8301-A106-47D2-9346A753590113EF_sc7Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9" x 12", White, 100/Box (ST379479-CC)~#|#~0CA4F8BE-F4B3-4D06-8F04C5B15E189C3C_sc7
25% off of Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9" x 12", White, 100/Box (ST379479-CC)
Item: 379479
Model: ST379479-CC
Price is $19.99, Regular price was $26.79, You save 25%
Unit of measure 100/Box Price per unit $0.20/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples EasyClose Kraft Catalog Envelopes, 10"L x 13"H, Brown, 100/Box (381969/19023)~#|#~F8D38AFF-BF1B-44BA-927E4BAD0395E984_sc7Staples EasyClose Kraft Catalog Envelopes, 10"L x 13"H, Brown, 100/Box (381969/19023)~#|#~27E9D898-F83D-4F24-B0E6E539E0F6853D_sc7
Item: 381969
Model: ST381969-CC
Price is $34.29
Unit of measure 100/Box Price per unit $0.34/Envelope
Next-Day Delivery by tomorrow
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Staples Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (ST28731-CC)~#|#~C945D44A-B550-4411-A459E3DC59387BBE_sc7Staples Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (ST28731-CC)~#|#~F5441B5F-2F28-4D45-BEE05F26392EE091_sc7
Item: 1775861
Model: ST28731-CC
Price is $30.79
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 6" x 9", Brown, 100/Box (ST186999-CC)~#|#~42649BB5-E8A4-40A3-B6BC516099812E10_sc7Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 6" x 9", Brown, 100/Box (ST186999-CC)~#|#~5FB5FB85-382B-4AD6-89F259EC8E596053_sc7
Item: 186999
Model: ST186999-CC
Price is $20.19
Unit of measure 100/Box Price per unit $0.20/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Clasp & Moistenable Glue #10 Kraft Catalog Envelopes, 9"L x 12"H, Brown, 12/Pack (19004/594412)~#|#~s1223347_sc7
Item: 594412
Model: ST19004-CC
Price is $5.99
Unit of measure 12/Pack Price per unit $0.50/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 9" x 12", Brown, 100/Box (ST187021-CC)~#|#~713459B4-5C29-4E83-B41A0AC28C10738C_sc7Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 9" x 12", Brown, 100/Box (ST187021-CC)~#|#~23812E19-B2D1-4CDD-8C465B30D749EFFE_sc7
Item: 187021
Model: ST187021-CC
Price is $27.29
Unit of measure 100/Box Price per unit $0.27/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Self Seal Security Tinted #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST511290-CC)~#|#~FEB14886-B768-46F3-B2B3AFBABEBFD7C4_sc7Staples Self Seal Security Tinted #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST511290-CC)~#|#~06821414-15D3-4B18-A5F0A3B87C9D8448_sc7
15% off of Staples Self Seal Security Tinted #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST511290-CC)
Item: 511290
Model: ST511290-CC
Price is $24.99, Regular price was $29.49, You save 15%
Unit of measure 500/Box Price per unit $0.05/Envelope
Next-Day Delivery by tomorrow
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Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 10" x 13", White, 100/Box (ST379476N-CC)~#|#~s1224482_sc7Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 10" x 13", White, 100/Box (ST379476N-CC)~#|#~s1224626_sc7
Item: 379476
Model: ST379476N-CC
Price is $33.39
Unit of measure 100/Box Price per unit $0.33/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 10" x 13", Brown, 100/Box (ST187039-CC)~#|#~27C9B96E-F97A-4128-92E49D560D038946_sc7Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 10" x 13", Brown, 100/Box (ST187039-CC)~#|#~C070EB62-2654-4D15-A8D7EBA0EF3D971A_sc7
Item: 187039
Model: ST187039-CC
Price is $35.99
Unit of measure 100/Box Price per unit $0.36/Envelope
Free Next-Day eligible by tomorrow
30-min pickup
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Staples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8" x 6 1/2", White, 100/Box (ST50313-CC)~#|#~s1223597_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8" x 6 1/2", White, 100/Box (ST50313-CC)~#|#~s1223609_sc7
Item: 862857
Model: ST50313-CC
Price is $11.19
Unit of measure 100/Box Price per unit $0.11/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Self Seal Security Tinted #8 Double Window Envelopes, 3 5/8" x 8 5/8", White, 500/Box (ST28732-CC)~#|#~5AA6A364-B3B6-4E90-9FD6B9CA55DD462E_sc7Staples Self Seal Security Tinted #8 Double Window Envelopes, 3 5/8" x 8 5/8", White, 500/Box (ST28732-CC)~#|#~F184BBF9-34E0-4442-81F1861DBB29DFFD_sc7
Item: 1775860
Model: ST28732-CC
Price is $30.79
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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Staples QuickStrip EasyClose Self Seal Invitation Envelopes, White Wove, 100/Box (ST394063/394063)~#|#~EB89E0A5-2ECE-4700-9BF5E55295E34138_sc7Staples QuickStrip EasyClose Self Seal Invitation Envelopes, White Wove, 100/Box (ST394063/394063)~#|#~2ECC89D3-7BF2-48B2-B461F0F032E15A05_sc7
Item: 394063
Model: ST394063/394063
Price is $11.19
Unit of measure 100/Box Price per unit $0.11/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples QuickStrip EasyClose Self Seal #1 Catalog Envelopes, 6" x 9", White, 100/Box (ST892099N-CC)~#|#~s1224614_sc7Staples QuickStrip EasyClose Self Seal #1 Catalog Envelopes, 6" x 9", White, 100/Box (ST892099N-CC)~#|#~s1224615_sc7
Item: 892099
Model: ST892099N-CC
Price is $16.69
Unit of measure 100/Box Price per unit $0.17/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8" x 6 1/2", White, 50/Box (ST862999-CC)~#|#~37F2D5CE-8A5E-49FC-A5FCEF34AC652B96_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8" x 6 1/2", White, 50/Box (ST862999-CC)~#|#~8C2500BC-A88D-48CD-B934455268FC04AC_sc7
Item: 862999
Model: ST862999-CC
Price is $5.69
Unit of measure 50/Box Price per unit $0.11/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 10" x 13", Brown Kraft, 12/Pack (ST19005/19005)~#|#~BAD43E8C-7FDB-4D8A-91C3D83A06FF1BF4_sc7Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 10" x 13", Brown Kraft, 12/Pack (ST19005/19005)~#|#~16CF4CC2-8E68-491E-B35FBDF79FAA3FC3_sc7
Item: 594413
Model: ST19005/19005
Price is $8.89
Unit of measure 12/Pack Price per unit $0.74/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Quality Park 28lb. Clasp Colored Kraft Catalog Envelopes, Grey Kraft, 9x12", 100/Box~#|#~s0269137_sc7Quality Park 28lb. Clasp Colored Kraft Catalog Envelopes, Grey Kraft, 9x12", 100/Box~#|#~s0171289_sc7
Item: 653521
Model: QUA38590
Price is $33.99
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Staples QuickStrip EasyClose Self Seal #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST381936/381936)~#|#~s1226295_sc7Staples QuickStrip EasyClose Self Seal #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST381936/381936)~#|#~s1223638_sc7
Item: 381936
Model: ST381936/381936
Price is $35.39
Unit of measure 500/Box Price per unit $0.07/Envelope
Free Next-Day eligible by tomorrow
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JAM Paper 9 x 12 Open End Catalog Envelopes, White, 25/Pack (1623197)~#|#~sp111772495_sc7JAM Paper 9 x 12 Open End Catalog Envelopes, White, 25/Pack (1623197)~#|#~sp111772494_sc7
Item: 366693
Model: 1623197
Price is $11.49
Unit of measure 25/Pack
Delivery by Wed, Oct 29
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LUX Peel & Seel Self Seal #10 Window Envelope, 4 1/2" x 9 1/2", White, 50/Pack  (75761-50)~#|#~sp14807363_sc7
Item: 24260686
Model: 75761-50
Price is $26.09
Unit of measure 50/Pack
Delivery by Mon, Nov 03
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Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50307-CC)~#|#~888BE6B1-31CD-47C0-A8C1657439776121_sc7Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50307-CC)~#|#~DDE921C8-55FF-44C0-B2C5590B29C8AE44_sc7
Item: 394053
Model: ST50307-CC
Price is $11.49
Unit of measure 100/Box Price per unit $0.12/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Trending now

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.