Sponsored Products
Staples Gummed Kraft Catalog Envelopes, 9" x 12", Gray, 100/Box (SPL381968)~#|#~6108CEAC-27AC-479C-B1A1FA5C1A89CDD0_sc7Staples Gummed Kraft Catalog Envelopes, 9" x 12", Gray, 100/Box (SPL381968)~#|#~7C24E491-623E-4253-96CC930AEDC6A264_sc7
Item: 381968
Model: ST19800-CC
Price is $32.19
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Staples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)~#|#~C1DE4A05-5BF1-4CB6-AF706FC6A1C4D67B_sc7Staples Self Seal 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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LUX Peel & Seel Self Seal Security Tinted Double Window Envelope, 4 1/8" x 9 1/8", White, 500/Pack (INVDW-500)~#|#~sp14807443_sc7
Item: 24261142
Model: INVDW-500
Price is $192.79
Unit of measure 500/Pack
Free delivery by Wed, Oct 22
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Staples Brand Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (570240/99294)~#|#~1D22CEC3-EF53-4FB5-A5BA1C460E01583A_sc7Staples Brand Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (570240/99294)~#|#~1DDEEC0B-AA88-4AF4-80F52C96DE579C95_sc7
Item: 570240
Model: ST570240-CC
Price is $31.49
Unit of measure 500/Box Price per unit $0.06/Envelope
Next-Day Delivery by tomorrow
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Staples Gummed Catalog Envelopes, 9"L x 12"H, White, 250/Box (486949R)~#|#~s1224588_sc7Staples Gummed Catalog Envelopes, 9"L x 12"H, White, 250/Box (486949R)~#|#~s1224587_sc7
Item: 486949
Model: ST486949R-CC
Price is $53.99
Unit of measure 250/Box Price per unit $0.22/Envelope
Free Next-Day eligible by tomorrow
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LUX 70lbs. 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Glue, Natural, 250/BX~#|#~m000082171_sc7
Item: 385429
Model: 5895-01-250
No reviews yet
Price is $53.19
Unit of measure 250/Box
Free delivery by Wed, Oct 22
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 8.75" x 11.5", Brown Kraft, 100/Box (QUA37787)~#|#~sp42116469_sc7
Item: 507832
Model: QUA37787
Price is $65.99
Unit of measure 100/Box Price per unit $0.66/Envelope
Free Next-Day eligible by tomorrow
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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, Oct 22
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LUX #6 3/4 Window Envelopes (3 5/8 x 6 1/2) 50/Pack, 24lb. Bright White w/ Sec. Tint (634W-W-50)~#|#~sp5822112_sc7LUX #6 3/4 Window Envelopes (3 5/8 x 6 1/2) 50/Pack, 24lb. Bright White w/ Sec. Tint (634W-W-50)~#|#~sp5875296_sc7
Item: 23995915
Model: 634W-W-50
Price is $26.19
Unit of measure 50/Pack
Delivery by Wed, Oct 22
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Staples Clasp & Moistenable Glue Kraft Catalog Envelopes, 10"L x 15"H, Brown, 100/Box (535021/19814)~#|#~sp45960592_sc7Staples Clasp & Moistenable Glue Kraft Catalog Envelopes, 10"L x 15"H, Brown, 100/Box (535021/19814)~#|#~E8F6B4B3-8E31-4BCF-8B1129085D2D1679_sc7
Item: 535021
Model: ST535021-CC
Price is $37.99
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 Gummed Kraft Catalog Envelopes, 9.5"L x 12.5"H, Brown, 100/Box (SPL534743)~#|#~s1224531_sc7Staples Gummed Kraft Catalog Envelopes, 9.5"L x 12.5"H, Brown, 100/Box (SPL534743)~#|#~s1224527_sc7
Item: 534743
Model: ST50194-CC
Price is $28.79
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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Staples Gummed Catalog Envelopes, 9" x 12", White, 25/Pack (ST579712N-CC)~#|#~s1224537_sc7Staples Gummed Catalog Envelopes, 9" x 12", White, 25/Pack (ST579712N-CC)~#|#~s1224546_sc7
Item: 579712
Model: ST579712N-CC
Price is $10.99
Unit of measure 25/Pack
Next-Day Delivery by tomorrow
30-min pickup
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Staples Plastic Filing Envelope with Button & String Closure, Letter Size, Clear, 5/Pack (TR34530)~#|#~676D38D2-4E46-4901-953D90C0F89E4B4F_sc7Staples Plastic Filing Envelope with Button & String Closure, Letter Size, Clear, 5/Pack (TR34530)~#|#~2A31369B-A17A-47E8-8E8159B7E5856F08_sc7
Item: 599609
Model: TR34530-CC
Price is $13.59
Unit of measure 5/Pack Price per unit $2.72/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Quality Park Clasp Kraft Catalog Envelope, 9 1/2" x 12 1/2", Brown, 100/Box (37893)~#|#~s0171274_sc7Quality Park Clasp Kraft Catalog Envelope, 9 1/2" x 12 1/2", Brown, 100/Box (37893)~#|#~s0375273_sc7
Item: 813455
Model: QUA37893
Price is $35.99
Unit of measure 100/Box
Free delivery by Thu, Oct 16
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Staples Kraft Catalog Envelopes, 6" x 9", Manila, 100/Box (918765/19381)~#|#~962003A1-4C21-42FB-8D65365FE763202C_sc7Staples Kraft Catalog Envelopes, 6" x 9", Manila, 100/Box (918765/19381)~#|#~FD91972A-05A3-428C-AF19005AA385028D_sc7
Item: 918765
Model: ST918765-CC
Price is $20.09
Unit of measure 100/Box Price per unit $0.20/Envelope
Next-Day Delivery by tomorrow
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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 Fri, Oct 17
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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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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, 60lb. White w/Peel & Press (4890-WPP-50)~#|#~sp14807759_sc7
Item: 24260770
Model: 4890-WPP-50
No reviews yet
Price is $19.39
Unit of measure 50/Pack
Delivery by Wed, Oct 22
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Staples Clasp & Moistenable Glue Kraft Catalog Envelopes, 6.5" x 9.5", Brown, 100/Box (534990/19815)~#|#~BAB0DBC0-0BEA-432E-BC50052CFF7F71DE_sc7Staples Clasp & Moistenable Glue Kraft Catalog Envelopes, 6.5" x 9.5", Brown, 100/Box (534990/19815)~#|#~FECE3FA4-A6EC-4952-9D6160A66423B732_sc7
Item: 534990
Model: ST534990-CC
Price is $31.09
Unit of measure 100/Box Price per unit $0.31/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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JAM Paper Self Seal Catalog Envelope, 12" x 15 1/2", Brown Kraft, 100/Pack (13034236D)~#|#~9F09E492-EDDD-41BD-B49DC74CD5F28DFC_sc7
Item: 24557950
Model: 13034236D
No reviews yet
Price is $56.59
Unit of measure 100/Pack
Free delivery by Fri, Oct 17
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Staples Gummed Booklet Envelopes, 9" x 12", White, 100/Box (473009/19307)~#|#~C25F6457-B752-4CCE-92C76AEF9248412F_sc7Staples Gummed Booklet Envelopes, 9" x 12", White, 100/Box (473009/19307)~#|#~7176E32C-DD4A-49B3-904D04684937ED94_sc7
Item: 473009
Model: ST473009-CC
Price is $33.89
Unit of measure 100/Box Price per unit $0.34/Envelope
Next-Day Delivery by tomorrow
30-min pickup
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Staples QuickStrip EasyClose Kraft Self Seal #1 Catalog Envelopes, 6" x 9", Kraft, 100/Box (ST20140/20140)~#|#~s1224581_sc7Staples QuickStrip EasyClose Kraft Self Seal #1 Catalog Envelopes, 6" x 9", Kraft, 100/Box (ST20140/20140)~#|#~s1224583_sc7
Item: 892100
Model: ST20140/20140
Price is $22.19
Unit of measure 100/Box
Next-Day Delivery by tomorrow
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LUX Self Seal A7 Invitation Envelope 5 1/4" x 7 1/4", Avocado Green, 50/Pack (EX4880-27-50)~#|#~F9C42045-9B12-49F2-B3303E6C11ADB6CB_sc7LUX Self Seal A7 Invitation Envelope 5 1/4" x 7 1/4", Avocado Green, 50/Pack (EX4880-27-50)~#|#~799990B4-4014-4F33-A54AB2EC77B40009_sc7
Item: 282729
Model: EX4880-27-50
No reviews yet
Price is $31.29
Unit of measure 50/Pack
Delivery by Wed, Oct 22
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Staples Button & String Inter-Departmental Kraft Envelopes, 10" x 13", Brown Kraft, 100/Box (50163/472993)~#|#~9D274A67-108B-4C47-A39C329CA2BD2CDB_sc7Staples Button & String Inter-Departmental Kraft Envelopes, 10" x 13", Brown Kraft, 100/Box (50163/472993)~#|#~B7B7C031-D58A-412B-A1812F2C1BE4CC96_sc7
Item: 472993
Model: ST50163-CC
Price is $58.29
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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JAM Paper 10 x 13 Kraft Open End Envelopes with Peel and Seal Closure, Light Grey Kraft, 25/Pack (12931116a)~#|#~sp4211471_sc7JAM Paper 10 x 13 Kraft Open End Envelopes with Peel and Seal Closure, Light Grey Kraft, 25/Pack (12931116a)~#|#~sp4211470_sc7
Item: 2478098
Model: 12931116A
No reviews yet
Price is $22.69
Unit of measure 25/Pack
Delivery by Fri, Oct 17
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Pack, Natural (5875-01-50)~#|#~sp14807958_sc7
Item: 24261006
Model: 5875-01-50
No reviews yet
Price is $13.49
Unit of measure 50/Pack
Delivery by Wed, Oct 22
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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.