JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 50/Pack (MOOP6250LDI)~#|#~m003904592_sc7JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 50/Pack (MOOP6250LDI)~#|#~m003904591_sc7
Item: 1589066
Model: MOOP6250LDI
Price is $12.49
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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JAM Paper® Plastic Envelopes with Hook & Loop Closure, Letter Size, Clear, 12/Pack (218V0CL)~#|#~sp42125171_sc7JAM Paper® Plastic Envelopes with Hook & Loop Closure, Letter Size, Clear, 12/Pack (218V0CL)~#|#~sp42125170_sc7
Item: 263525
Model: 218V0CL
Price is $38.29
Unit of measure 12/Pack Price per unit $3.19/Envelope
Free delivery by Mon, Dec 15
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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 $120.29
Unit of measure 100/Box Price per unit $1.20/Envelope
Free delivery by Tue, Dec 09
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JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 1000/Carton (11789B)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 1000/Carton (11789B)~#|#~sp36388044_sc7
Item: 260851
Model: 11789B
Price is $261.29
Unit of measure 1000/Carton
Free delivery by Mon, Dec 15
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JAM Paper Gummed #10 Business Envelope, 4 1/8" x 9 1/2", Green Brite Hue, 50/Pack (15862I)~#|#~sp151516563_sc7JAM Paper Gummed #10 Business Envelope, 4 1/8" x 9 1/2", Green Brite Hue, 50/Pack (15862I)~#|#~sp151516562_sc7
Item: 1588699
Model: 15862I
Price is $16.99
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, White, Bulk 250/Box (4023213H)~#|#~m003904861_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, White, Bulk 250/Box (4023213H)~#|#~m003904860_sc7
Item: 1590111
Model: 4023213H
Price is $65.39
Unit of measure 250/Box
Free delivery by Mon, Dec 15
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JAM Paper #10 Metallic Business Envelopes, 4.125 x 9.5, Stardream Gold, 25/Pack (SD5360 07)~#|#~m003905201_sc7JAM Paper #10 Metallic Business Envelopes, 4.125 x 9.5, Stardream Gold, 25/Pack (SD5360 07)~#|#~m003905200_sc7
Item: 261972
Model: SD5360 07
No reviews yet
Price is $25.49
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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Staples Self Seal Kraft Catalog Envelopes, 10"L x 13"H, Brown, 100/Box (534818/19022)~#|#~3861058B-C75E-4836-BC1455B5BA1C6B5A_sc7Staples Self Seal Kraft Catalog Envelopes, 10"L x 13"H, Brown, 100/Box (534818/19022)~#|#~CBEE46E7-2A6A-4F88-B9A211A3AFAF28ED_sc7
Item: 534818
Model: ST534818-CC
Price is $57.49
Unit of measure 100/Box
Free delivery by Tue, Dec 09
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LUX 9 x 12 Kraft Open End Envelopes 50/Pack, 24lb. Brown Kraft (8383-50)~#|#~sp14807490_sc7
Item: 24260359
Model: 8383-50
Price is $20.59
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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Quality Park Gummed Open-End Catalog Envelopes, 10" x 13", Brown, 100/Bx (QUA41667)~#|#~s0293042_sc7Quality Park Gummed Open-End Catalog Envelopes, 10" x 13", Brown, 100/Bx (QUA41667)~#|#~s0171324_sc7
Item: 817397
Model: QUA41667
No reviews yet
Price is $51.19
Unit of measure 100/Box
Free delivery by Tue, Dec 16
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JAM Paper 10 x 13 Kraft Open End Envelopes with Peel and Seal Closure, Light Grey Kraft, 100/Pack (12931116c)~#|#~sp4211471_sc7JAM Paper 10 x 13 Kraft Open End Envelopes with Peel and Seal Closure, Light Grey Kraft, 100/Pack (12931116c)~#|#~sp4211470_sc7
Item: 2478099
Model: 12931116C
No reviews yet
Price is $81.29
Unit of measure 100/Pack
Free delivery by Mon, Dec 15
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Over 30
JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Blue, 12/Pack (218B1BU)~#|#~m002934363_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Blue, 12/Pack (218B1BU)~#|#~m002934362_sc7
Item: 263016
Model: 218B1BU
Price is $38.19
Unit of measure 12/Pack Price per unit $3.18/Envelope
Free delivery by Mon, Dec 15
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Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Blue, 100/Carton (QUA63577)~#|#~sp44342534_sc7Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Blue, 100/Carton (QUA63577)~#|#~sp44342533_sc7
Item: 813412
Model: QUA63577
Price is $198.59
Unit of measure 100/Carton
Free delivery by Tue, Dec 09
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LUX Open End Catalog Envelopes, 11" x 17", Bright White, 250/Pack (85923-250)~#|#~sp42804711_sc7
Item: 385904
Model: 85923-250
No reviews yet
Price is $281.19
Unit of measure 250/Box
Free delivery by Wed, Dec 17
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Over 30
JAM Paper A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 50/Pack (4023213I)~#|#~m003904861_sc7JAM Paper A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 50/Pack (4023213I)~#|#~m003904860_sc7
Item: 1588740
Model: 4023213I
Price is $17.49
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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Over 30
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Holiday Red (4872-R-50)~#|#~m000081860_sc7
Item: 282548
Model: 4872-R-50
Price is $23.39
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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Over 30
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, Dec 09
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JAM Paper Peel & Seal Kraft Open End Catalog Envelope, 9" x 12", Brown, 500/Pack (13034231C)~#|#~sp20131895_sc7JAM Paper Peel & Seal Kraft Open End Catalog Envelope, 9" x 12", Brown, 500/Pack (13034231C)~#|#~sp20131894_sc7
Item: 24295083
Model: 13034231C
Price is $202.99
Unit of measure 500/Pack
Free delivery by Mon, Dec 15
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JAM Paper Self Seal Business Envelope, 8 1/2 x 8 1/2, 70lb, White, 50 Pack (10977-50)~#|#~sp226423816_sc7JAM Paper Self Seal Business Envelope, 8 1/2 x 8 1/2, 70lb, White, 50 Pack (10977-50)~#|#~sp226423815_sc7
Item: 24578432
Model: 10977-50
No reviews yet
Price is $22.19
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 8 7/16 x 10 1/4, Clear, 100/Pack (8X10CELLO)~#|#~m000068423_sc7
Item: 262918
Model: 8X10CELLO
No reviews yet
Price is $80.59
Unit of measure 100/Pack
Free delivery by Mon, Dec 15
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LUX 80lbs. 10" x 13" Open End Envelopes, Midnight Black, 500/Box (87733-500)~#|#~6E765694-6AE2-40A7-9675F83BC2DDC271_sc7LUX 80lbs. 10" x 13" Open End Envelopes, Midnight Black, 500/Box (87733-500)~#|#~08C5A136-04AE-4051-8F9BAB43ABF98EED_sc7
Item: 385926
Model: 87733-500
Price is $158.69
Unit of measure 500/Box
Free delivery by Wed, Dec 17
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LUX 5 1/4" x 7 1/4" 3.5 mil A7 Invitation Envelopes W/Peel & Seal, Crystal Clear, 50/Pack~#|#~m000081564_sc7
Item: 282752
Model: CCA7-50
Price is $16.19
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i)~#|#~sp11854810_sc7JAM Paper 9.5 x 12.5 Open End Catalog Envelopes with Peel and Seal Closure, White, 50/Pack (356828781i)~#|#~sp11854809_sc7
Item: 24145250
Model: 356828781I
No reviews yet
Price is $37.19
Unit of measure 50/Pack
Free delivery by Mon, Dec 15
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Quality Park Gummed Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 250/Box (41565)~#|#~s0171318_sc7
Item: 377336
Model: QUA41565
Price is $78.59
Unit of measure 250/Box
Free delivery by Fri, Dec 12
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LUX #6 3/4 Regular Envelopes (3 5/8 x 6 1/2) 50/Pack, 24lb. Bright White w/ Press-Stik (634W-PS-50)~#|#~sp5822112_sc7LUX #6 3/4 Regular Envelopes (3 5/8 x 6 1/2) 50/Pack, 24lb. Bright White w/ Press-Stik (634W-PS-50)~#|#~sp5873690_sc7
Item: 23995950
Model: 634W-PS-50
No reviews yet
Price is $18.99
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper Self Seal #6 Coin Business Envelopes, 3 3/8" x 6", Brown Kraft Manila, 100/Pack (400238463D)~#|#~875F6E23-C7D6-4BB5-9977457F43BBA7D2_sc7
Item: 24557871
Model: 400238463D
No reviews yet
Price is $22.69
Unit of measure 100/Pack
Delivery by Mon, Dec 15
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JAM Paper A6 Invitation Envelope, 4 3/4" x 6 1/2", White, 1000/Pack (31820B)~#|#~m003904578_sc7JAM Paper A6 Invitation Envelope, 4 3/4" x 6 1/2", White, 1000/Pack (31820B)~#|#~m003904577_sc7
Item: 366221
Model: 31820B
Price is $134.19
Unit of measure 1000/Carton
Free delivery by Mon, Dec 15
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JAM Paper Open End Open End Catalog Envelope, 9" x 12", White, 50/Pack (1623197I)~#|#~sp111772495_sc7JAM Paper Open End Open End Catalog Envelope, 9" x 12", White, 50/Pack (1623197I)~#|#~sp111772494_sc7
Item: 24006023
Model: 1623197I
Price is $26.19
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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Over 30
Quality Park Self Seal Kraft Catalog Envelopes, 10"L x 15"H, Kraft, 25/Pack (QUA93338)~#|#~sp44343618_sc7Quality Park Self Seal Kraft Catalog Envelopes, 10"L x 15"H, Kraft, 25/Pack (QUA93338)~#|#~sp44343617_sc7
Item: 445597
Model: QUA93338
Price is $53.59
Unit of measure 25/Pack
Free delivery by Tue, Dec 09
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JAM Paper #1 Coin Envelopes, 2 1/4" x 3 1/2", Ruby Red, 25/Pack (900967818)~#|#~8E0DF42D-B1C9-4FE9-9C95728BBBAC9118_sc7JAM Paper #1 Coin Envelopes, 2 1/4" x 3 1/2", Ruby Red, 25/Pack (900967818)~#|#~6DDEB54A-0E14-4A8F-95A43BD955646F7E_sc7
Item: 262521
Model: 900967818
Price is $9.09
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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Over 30
LUX 11 1/2 x 14 1/2 Open End Envelopes 250/Pack, 28lb. Bright White (4166-250)~#|#~sp14807484_sc7
Item: 24260671
Model: 4166-250
No reviews yet
Price is $123.29
Unit of measure 250/Pack
Free delivery by Wed, Dec 17
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Over 30
JAM Paper Plastic Envelopes with Hook & Loop Closure, Index Booklet, 5.5 x 7.5, Lime Green, 12/Pack (920V0LI)~#|#~sp89840287_sc7JAM Paper Plastic Envelopes with Hook & Loop Closure, Index Booklet, 5.5 x 7.5, Lime Green, 12/Pack (920V0LI)~#|#~sp89840080_sc7
Item: 1227717
Model: 920V0LI
Price is $28.19
Unit of measure 12/Pack Price per unit $2.35/Envelope
Delivery by Mon, Dec 15
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JAM Paper Cellophane Envelopewith Peel & Seal Closure, 3.25 x 3.25, Clear, 100/Pack (3.25X3.25CELLO)~#|#~m000068411_sc7
Item: 262889
Model: 3.25X3.25CELLO
No reviews yet
Price is $7.99
Unit of measure 100/Pack
Delivery by Mon, Dec 15
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Over 30
Quality Park Kraft Button & String Inter-Departmental Envelope 9" x 12", Brown, 100/Box (QUA63462)~#|#~sp41694167_sc7
Item: 377401
Model: QUA63462
Price is $101.89
Unit of measure 100/Box
Free delivery by Wed, Dec 10
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Over 30
JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, Bulk 250/Box (191189H)~#|#~m007159173_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Bright White Linen, Bulk 250/Box (191189H)~#|#~m007159172_sc7
Item: 1590130
Model: 191189H
No reviews yet
Price is $73.29
Unit of measure 250/Box
Free delivery by Mon, Dec 15
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JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566184_sc7JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566189_sc7
Item: 1588470
Model: 3992321I
No reviews yet
Price is $72.39
Unit of measure 50/Pack
Free delivery by Mon, Dec 15
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Over 30
LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes W/Peel&Press, White Linen, 250/BX~#|#~m000211243_sc7
Item: 515097
Model: 7716-WLI-250
No reviews yet
Price is $106.39
Free delivery by Wed, Dec 17
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Navy (LUX-4872-103-50)~#|#~m000081868_sc7
Item: 282556
Model: LUX-4872-103-50
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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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.