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LUX 5 1/4" x 7 1/4" 80lbs. A7 Invitation Envelopes W/Peel & Press, Midnight Black~#|#~m005902338_sc7LUX 5 1/4" x 7 1/4" 80lbs. A7 Invitation Envelopes W/Peel & Press, Midnight Black~#|#~m005823959_sc7
Item: 282787
Model: F-4580-B-50
No reviews yet
Price is $19.79
Unit of measure 50/Pack
Delivery by Wed, Oct 07
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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 delivery by Tue, Sep 29
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Staples Tyvek EasyClose Catalog Envelopes, 9"L x 12"H, White, 100/Box (ST19873)~#|#~sp37069926_sc7
Item: 534909
Model: ST19873
Price is $123.29
Unit of measure 100/Box Price per unit $1.23/Envelope
Free delivery by Tue, Sep 29
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JAM Paper® Plastic Envelopes with Elastic Band Closure, Letter Size, Assorted Colors, 6/Pack (218E25BGOPFUCL)~#|#~sp42124790_sc7JAM Paper® Plastic Envelopes with Elastic Band Closure, Letter Size, Assorted Colors, 6/Pack (218E25BGOPFUCL)~#|#~sp42124789_sc7
Item: 1588431
Model: 218E25BGOPFUCL
Price is $33.29
Unit of measure 6/Pack Price per unit $5.55/Envelope
Delivery by Mon, Oct 05
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Quality Park Clasp Nonstandard Kraft Catalog Envelope, 10" x 13", Gray, 100/Box (QUA38597)~#|#~s0269137_sc7
Item: 696593
Model: QUA38597
Price is $46.29
Unit of measure 100/Box
Free delivery by Tue, Sep 29
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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
Delivery by Tue, Sep 29
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Quality Park Redi-Seal Security Tinted #10 Window Envelope, 4 1/8" x 9 1/2", White Wove, 500/Box (21418)~#|#~sp38165574_sc7Quality Park Redi-Seal Security Tinted #10 Window Envelope, 4 1/8" x 9 1/2", White Wove, 500/Box (21418)~#|#~sp38165572_sc7
Item: 458294
Model: QUA21418
Price is $151.69
Unit of measure 500/Box Price per unit $0.30/Envelope
Free delivery by Tue, Sep 29
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Quality Park Redi-Seal Self Seal #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 500/Pack (24559-QP-500)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 500/Pack (24559-QP-500)~#|#~sp79645420_sc7
Item: 23995432
Model: 24559-QP-500
Price is $135.29
Unit of measure 500/Pack
Free delivery by Wed, Oct 07
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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 $197.69
Unit of measure 500/Pack
Free delivery by Wed, Oct 07
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, White, 25/Pack (MOOP6250LD)~#|#~sp111772291_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, White, 25/Pack (MOOP6250LD)~#|#~sp111772290_sc7
Item: 365868
Model: MOOP6250LD
Price is $10.49
Unit of measure 25/Pack
Delivery by Mon, Oct 05
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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
Delivery by Tue, Sep 29
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Staples 9.5 x 12.5 Kraft Catalog Envelopes, Brown, Gummed Flap, Tear‑Resistant Heavyweight Mailers for Documents, 100/Box~#|#~s1224531_sc7Staples 9.5 x 12.5 Kraft Catalog Envelopes, Brown, Gummed Flap, Tear‑Resistant Heavyweight Mailers for Documents, 100/Box~#|#~s1224527_sc7
Item: 534743
Model: ST50194-CC
Price is $29.59
Unit of measure 100/Box
Delivery by Tue, Sep 29
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Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132158_sc7Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132157_sc7
Item: 507690
Model: QUA11218
Price is $101.59
Unit of measure 500/Box
Free delivery by Tue, Sep 29
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SURVIVOR Open Side Expansion Self Seal #13 Catalog Envelope, 10" x 13" x 2", White, 25/Pack (QUAR4611)~#|#~m002277816_sc7
Item: 2708498
Model: QUAR4611
Price is $155.99
Unit of measure 25/Pack
Free delivery by Tue, Sep 29
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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 Mon, Oct 05
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JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238)~#|#~sp124925524_sc7JAM Paper Booklet Envelope, 6" x 9", White, 25/Pack (4238)~#|#~sp124925523_sc7
Item: 366031
Model: 4238
Price is $13.59
Unit of measure 25/Pack
Delivery by Mon, Oct 05
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Staples 12 x 15.5 Extra‑Heavyweight Clasp Envelopes, Manila Kraft, Reinforced Metal Clasp & Gummed Seal, 100/Box~#|#~ED4FBAF7-1910-43E5-AA227165B1A03555_sc7Staples 12 x 15.5 Extra‑Heavyweight Clasp Envelopes, Manila Kraft, Reinforced Metal Clasp & Gummed Seal, 100/Box~#|#~1EE1C288-2804-4DA7-A5C065C303D1149C_sc7
Item: 122150
Model: ST122150-CC
Price is $68.89
Unit of measure 100/Box
Free delivery by Tue, Sep 29
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 10" x 15", Brown Kraft, 100/Box (37798)~#|#~s0288241_sc7
Item: 510663
Model: QUA37798
Price is $48.99
Unit of measure 100/Box Price per unit $0.49/Envelope
Free delivery by Tue, Sep 29
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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 $32.99
Unit of measure 100/Box
Delivery by Tue, Sep 29
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JAM Paper Booklet Envelopes, 10" x 13", White, 25/Pack (4023222)~#|#~sp111772382_sc7JAM Paper Booklet Envelopes, 10" x 13", White, 25/Pack (4023222)~#|#~sp111772381_sc7
Item: 366163
Model: 4023222
Price is $14.89
Unit of measure 25/Pack
Delivery by Mon, Oct 05
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, 70lb. Bright White (20677-50)~#|#~m000081998_sc7
Item: 282724
Model: 20677-50
Price is $22.59
Unit of measure 50/Pack
Delivery by Wed, Oct 07
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LUX Open End Open End Window Envelope, 9" x 12", White Linen, 250/Pack (1590-WLI-250)~#|#~0951B3CF-B968-40F6-A6BD04D75E60B5AA_sc7
Item: 1277765
Model: 1590-WLI-250
No reviews yet
Price is $165.39
Unit of measure 250/Box
Free delivery by Wed, Oct 07
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Quality Park Redi-Seal Catalog Envelope, 6" x 9", White, 100/Box (43117)~#|#~s0171342_sc7
Item: 507910
Model: QUA43117
Price is $28.29
Unit of measure 100/Box
Delivery by Tue, Sep 29
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JAM Paper Kraft Open End Catalog Envelope, 11 1/2" x 14 1/2", Brown, 50/Pack (313011452I)~#|#~sp111772390_sc7JAM Paper Kraft Open End Catalog Envelope, 11 1/2" x 14 1/2", Brown, 50/Pack (313011452I)~#|#~sp111772389_sc7
Item: 24295151
Model: 313011452I
Price is $25.59
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Wove, 25/Pack (STTW711)~#|#~sp111772299_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Wove, 25/Pack (STTW711)~#|#~sp111772298_sc7
Item: 262525
Model: STTW711
Price is $12.69
Unit of measure 25/Pack
Delivery by Mon, Oct 05
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JAM Paper 10" x 13" Open End Catalog Envelopes, White, 25/Pack (1623199)~#|#~sp111772499_sc7JAM Paper 10" x 13" Open End Catalog Envelopes, White, 25/Pack (1623199)~#|#~sp111772498_sc7
Item: 366708
Model: 1623199
Price is $17.09
Unit of measure 25/Pack
Delivery by Mon, Oct 05
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JAM Paper Kraft A7 Invitation Envelopes, 5.25 x 7.25, Brown Kraft Paper Bag, 25/Pack (LEKR700)~#|#~m004672451_sc7JAM Paper Kraft A7 Invitation Envelopes, 5.25 x 7.25, Brown Kraft Paper Bag, 25/Pack (LEKR700)~#|#~m004672450_sc7
Item: 261529
Model: LEKR700
Price is $14.29
Unit of measure 25/Pack
Delivery by Mon, Oct 05
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Quality Park Tyvek Expansion Self Seal #13 Catalog Envelope, 10" x 13" x 1 1/2", White, 100/Carton (R4200)~#|#~s0171532_sc7
Item: 831278
Model: QUAR4200
Price is $290.99
Unit of measure 100/Carton
Free delivery by Tue, Sep 29
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Staples Self Seal Catalog Envelopes, 12" x 15.5", White, 100/Box (609123/73142)~#|#~222A2E50-FD44-4AA9-A348097CFAF63B66_sc7Staples Self Seal Catalog Envelopes, 12" x 15.5", White, 100/Box (609123/73142)~#|#~3F280CCA-0192-4AC5-ABDE8803F67EC0C3_sc7
Item: 609123
Model: ST609123-CC
Price is $39.29
Unit of measure 100/Box
Free delivery by Wed, Sep 30
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Staples Self Seal Kraft Catalog Envelopes, 9.5"L x 12.5"H, Brown, 100/Box (SPL381962)~#|#~94015978-EB59-48E9-925D68D69797573C_sc7Staples Self Seal Kraft Catalog Envelopes, 9.5"L x 12.5"H, Brown, 100/Box (SPL381962)~#|#~D9CAA66C-45D5-4A57-A2F5FDAFD57FCD32_sc7
Item: 381962
Model: ST50195
Price is $46.89
Unit of measure 100/Box
Free delivery by Tue, Sep 29
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JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 50/Pack (11789I)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 50/Pack (11789I)~#|#~sp36388044_sc7
Item: 1588623
Model: 11789I
Price is $16.99
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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Staples 9 x 12 Catalog Envelopes, Brown Kraft, Gummed Flap Seal, Tear‑Resistant Heavyweight Open‑End Mailers, 100/Box~#|#~s1224532_sc7Staples 9 x 12 Catalog Envelopes, Brown Kraft, Gummed Flap Seal, Tear‑Resistant Heavyweight Open‑End Mailers, 100/Box~#|#~s1224533_sc7
Item: 194969
Model: SPL194969/50190
Price is $35.09
Unit of measure 100/Box
Free delivery by Tue, Sep 29
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, 24lb. White~#|#~m004064012_sc7
Item: 2146371
Model: 51867-MI-50
No reviews yet
Price is $12.69
Unit of measure 50/Pack
Delivery by Wed, Oct 07
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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 Mon, Oct 05
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Lilac (SH4280-05-50)~#|#~m005902349_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Lilac (SH4280-05-50)~#|#~m005823955_sc7
Item: 282783
Model: SH4280-05-50
Price is $16.29
Unit of measure 50/Pack
Delivery by Wed, Oct 07
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 5" x 7.5", Brown Kraft, 100/Box (QUA37835)~#|#~sp42116471_sc7
Item: 513235
Model: QUA37835
Price is $44.79
Unit of measure 100/Box
Free delivery by Tue, Sep 29
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Staples Self Seal #13 1/2 Kraft Catalog Envelope, 10" x 13", Brown, 250/Box (ST486933-CC)~#|#~s1224504_sc7Staples Self Seal #13 1/2 Kraft Catalog Envelope, 10" x 13", Brown, 250/Box (ST486933-CC)~#|#~s1224575_sc7
Item: 486933
Model: ST486933-CC
Price is $61.49
Unit of measure 250/Box
Free delivery by Tue, Sep 29
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JAM Paper #3 Kraft Coin Envelope, 2 1/2" x 4 1/4", Brown Kraft, 50/Pack (1623989I)~#|#~sp77468249_sc7JAM Paper #3 Kraft Coin Envelope, 2 1/2" x 4 1/4", Brown Kraft, 50/Pack (1623989I)~#|#~sp77468248_sc7
Item: 2633172
Model: 1623989I
Price is $11.49
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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Quality Park Tyvek Survivor Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (QUAR1590)~#|#~sp44490056_sc7Quality Park Tyvek Survivor Self Seal Catalog Envelopes, 10"L x 13"H, White, 100/Box (QUAR1590)~#|#~sp44490055_sc7
Item: 827896
Model: QUAR1590
Price is $134.99
Unit of measure 100/Box
Free delivery by Tue, Sep 29
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Baby Blue (EX4875-13-50)~#|#~m000081896_sc7
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Baby Blue (EX4875-13-50) is Out of stock
Item: 282588
Model: EX4875-13-50
No reviews yet
Price is $14.19
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.