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Square Envelopes

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 $10.79
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 Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)~#|#~71449A93-295B-4261-811E5A6CE6155C97_sc7Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)~#|#~s1223639_sc7
Item: 787385
Model: ST50312-CC
Price is $27.69
Unit of measure 500/Box Price per unit $0.06/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)~#|#~78475DB5-FE94-47A1-BD414BEF4047E6F8_sc7Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 9" x 12", Brown, 100/Box (ST187021-CC)~#|#~463CD40E-CDA8-4E06-91B95BA912506815_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 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
Item: 381970
Model: ST381970-CC
Price is $25.99
Unit of measure 100/Box Price per unit $0.26/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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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
Item: 379479
Model: ST379479-CC
Price is $27.49
Unit of measure 100/Box Price per unit $0.28/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
Delivery by Fri, Jun 05
30-min pickup
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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 Self Seal Security Tinted #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST511290-CC)~#|#~36CFAD5D-699D-4FBF-9F1431C9800B1085_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
Item: 511290
Model: ST511290-CC
Price is $30.99
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, 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 Clasp & Moistenable Glue #10 Kraft Catalog Envelopes, 9"L x 12"H, Brown, 12/Pack (19004/594412)~#|#~34EFE56B-DFD2-4A72-895EEF2358F5A8F1_sc7Staples 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 $6.19
Unit of measure 12/Pack Price per unit $0.52/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 Kraft Clasp & Moistenable Glue Catalog Envelopes, 6" x 9", Brown, 100/Box (ST186999-CC)~#|#~A58AD89A-A58D-4AA2-8EBFA1E057038E70_sc7Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 6" x 9", Brown, 100/Box (ST186999-CC)~#|#~C9039305-CAF7-4C8D-88EFD56BC29583B6_sc7
Item: 186999
Model: ST186999-CC
Price is $20.69
Unit of measure 100/Box Price per unit $0.21/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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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 $11.49
Unit of measure 100/Box Price per unit $0.12/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 $5.89
Unit of measure 50/Box Price per unit $0.12/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, 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 #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)~#|#~31B0C6F7-91DE-4E95-A11E3670DC5F2DD8_sc7Staples Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)~#|#~73F89DCA-30B6-46FA-B098CD35CE9CBEC8_sc7
Item: 511289
Model: ST511289-CC
Price is $30.99
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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JAM Paper Self-Seal Catalog Envelope 10" x 13", Brown Kraft Manila, 100/Pack (13034233D)~#|#~FC4A4974-E404-47B4-857A31AC4A500A39_sc7
Item: 24557999
Model: 13034233D
Price is $45.19
Unit of measure 100/Pack
Free delivery by Tue, Jun 09
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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 Clasp & Moistenable Glue #15.5 Kraft Catalog Envelopes, 12" x 15.5", Brown, 100/Box (472902/19273)~#|#~B1A7E20E-7195-4296-BBDAB29BDF33CF88_sc7Staples Clasp & Moistenable Glue #15.5 Kraft Catalog Envelopes, 12" x 15.5", Brown, 100/Box (472902/19273)~#|#~DB5E5BDD-D14D-45AA-924C1B2B4A473ACB_sc7
Item: 472902
Model: ST472902-CC
Price is $37.79
Unit of measure 100/Box Price per unit $0.38/Envelope
Free Next-Day eligible by tomorrow
30-min pickup
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Staples EasyClose #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (50306)~#|#~s1223617_sc7Staples EasyClose #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (50306)~#|#~s1223598_sc7
Item: 381912
Model: ST50306-CC
Price is $32.19
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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JAM Paper Gummed A7 Invitation Envelopes, 5 1/4" x 7 1/4", White, 25/Pack (73767)~#|#~sp70241006_sc7JAM Paper Gummed A7 Invitation Envelopes, 5 1/4" x 7 1/4", White, 25/Pack (73767)~#|#~sp70241005_sc7
Item: 365929
Model: 73767
Price is $8.19
Unit of measure 25/Pack
Delivery by Tue, Jun 09
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Mead Press It Seal It #10 Security Envelopes, 4 1/8" x 9 1/2", White, 45/Pack (MEA75026)~#|#~m007116469_sc7
Item: 2696277
Model: 75026
Price is $6.19
Unit of measure 45/Pack
Next-Day Delivery by tomorrow
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Quality Park Self Seal A2 Invitation Envelope 4 3/8" x 5 3/4", White, 100/Box (QUA10740)~#|#~sp43812739_sc7Quality Park Self Seal A2 Invitation Envelope 4 3/8" x 5 3/4", White, 100/Box (QUA10740)~#|#~sp43812738_sc7
Item: 582032
Model: QUA10740
Price is $25.59
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Quality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (24559-QP-50)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (24559-QP-50)~#|#~sp5875503_sc7
Item: 23996473
Model: 24559-QP-50
Price is $42.69
Unit of measure 50/Pack
Free delivery by Fri, Jun 12
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Staples Clasp & Moistenable Glue #10 Catalog Envelope, 9" x 12", Natural Brown, 100/Box (ST19964-CC)~#|#~1DDCB35A-EEAF-440E-ADCCEA00C7EC64D0_sc7Staples Clasp & Moistenable Glue #10 Catalog Envelope, 9" x 12", Natural Brown, 100/Box (ST19964-CC)~#|#~563B8015-2523-4A91-918CED13A09EFB67_sc7
Item: 884781
Model: ST19964-CC
Price is $29.49
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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JAM Paper A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 100/Pack (4023213C)~#|#~m002934506_sc7JAM Paper A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 100/Pack (4023213C)~#|#~m002934505_sc7
Item: 2103322
Model: 4023213C
Price is $29.09
Unit of measure 100/Pack
Delivery by Tue, Jun 09
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Staples Self Seal Kraft Catalog Envelopes, 12" x 15.5", Brown, 100/Box (534826/17102)~#|#~s1224602_sc7Staples Self Seal Kraft Catalog Envelopes, 12" x 15.5", Brown, 100/Box (534826/17102)~#|#~s1224599_sc7
Item: 534826
Model: ST534826-CC
Price is $38.79
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Quality Park Clasp Catalog Envelope, 6 1/2" x 9 1/2", Kraft, 100/Box (37863)~#|#~s0462609_sc7
Item: QUA37863
Model: QUA37863
Price is $33.99
Unit of measure Box
Delivery by Mon, Jun 08
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Staples Clasp Close Kraft Catalog Envelopes, 9"L x 12"H, Brown, 250/Box (487493/17242)~#|#~F1549B31-0676-494D-84110CF619EACA98_sc7Staples Clasp Close Kraft Catalog Envelopes, 9"L x 12"H, Brown, 250/Box (487493/17242)~#|#~B523903F-E765-4FFA-92425FAAE9DC5790_sc7
Item: 487493
Model: ST487493-CC
Price is $51.29
Unit of measure 250/Box Price per unit $0.20/Envelope
Free Next-Day eligible by tomorrow
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Staples Booklet Envelopes, 8 3/4" x 5 3/4", Assorted Colors, 50/Box (ST20558-CC)~#|#~48C2A8AC-D1CC-4BD8-ACB5BCE3347A927F_sc7Staples Booklet Envelopes, 8 3/4" x 5 3/4", Assorted Colors, 50/Box (ST20558-CC)~#|#~F35DCCC7-7F8B-41E5-B73BC9B1E41C2F6C_sc7
Item: 902097
Model: ST20558-CC
Price is $9.59
Unit of measure 50/Box
Next-Day Delivery by tomorrow
30-min pickup
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Staples Extra-Heavyweight Clasp & Moistenable Glue Catalog Envelopes, 9"L x 12"H, Manila, 100/Box (121962/19276)~#|#~065ABC77-D6E4-43CA-B51F295C3DE3E4BE_sc7Staples Extra-Heavyweight Clasp & Moistenable Glue Catalog Envelopes, 9"L x 12"H, Manila, 100/Box (121962/19276)~#|#~5AC0BACE-43EF-4DE3-B45DA27A0B23A8BA_sc7
Item: 121962
Model: ST59961-CC
Price is $27.29
Unit of measure 100/Box Price per unit $0.27/Envelope
Next-Day Delivery by tomorrow
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Quality Park Redi-Seal Self Seal Security Tinted #9 Double Window Envelope, 3 7/8" x 8 7/8", White Wove, 250/Pack (24529-250)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal Security Tinted #9 Double Window Envelope, 3 7/8" x 8 7/8", White Wove, 250/Pack (24529-250)~#|#~s1196808_sc7
Item: 23996116
Model: 24529-250
Price is $91.39
Unit of measure 250/Pack
Free delivery by Fri, Jun 12
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LUX #9 Window Envelopes, 3 7/8" x 8 7/8", White w/ Simple Seal, 50 Qty (45313-50)~#|#~m004064011_sc7
Item: 2146254
Model: 45313-50
No reviews yet
Price is $38.29
Unit of measure 50/Pack
Free delivery by Fri, Jun 12
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Staples Laser Security Tinted Double Window Envelopes, 3 5/8" x 8 7/8", Wove White, 500/Box (ST394062-CC)~#|#~C39630DD-6A75-47E8-8D8FD913E48BEAD0_sc7Staples Laser Security Tinted Double Window Envelopes, 3 5/8" x 8 7/8", Wove White, 500/Box (ST394062-CC)~#|#~79F8C193-D873-4D92-AF21E923C116C374_sc7
Item: 394062
Model: ST394062-CC
Price is $30.49
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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JAM Paper A2 Colored Invitation Envelopes, 4 3/8" x 5 3/4", Assorted Colors, 150/Pack (956A2brogvy)~#|#~10C3ADA3-FBCA-40C0-89A924CFF897F9D5_sc7JAM Paper A2 Colored Invitation Envelopes, 4 3/8" x 5 3/4", Assorted Colors, 150/Pack (956A2brogvy)~#|#~6F3A3927-F991-4684-ACE84A5599DE2D8A_sc7
Item: 24175052
Model: 956A2BROGVY
Price is $45.19
Unit of measure 150/Pack
Free delivery by Tue, Jun 09
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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.