Square Envelopes

Quality Park #110 Tyvek Self-Adhesive USPS First Class Mailer, 12" x 15.5", White/Green, 100/Box (QUAR1800)~#|#~s0292999_sc7Quality Park #110 Tyvek Self-Adhesive USPS First Class Mailer, 12" x 15.5", White/Green, 100/Box (QUAR1800)~#|#~s0171523_sc7
Item: QUAR1800
Model: QUAR1800
Price is $161.09
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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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 $35.59
Unit of measure 6/Pack Price per unit $5.93/Envelope
Free delivery by Wed, Oct 22
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JAM Paper #3 Kraft Coin Envelope, 2 1/2" x 4 1/4", Brown Kraft Manila, 100/pack (49306I)~#|#~sp95008902_sc7JAM Paper #3 Kraft Coin Envelope, 2 1/2" x 4 1/4", Brown Kraft Manila, 100/pack (49306I)~#|#~sp95008900_sc7
Item: 1588611
Model: 49306I
No reviews yet
Price is $18.19
Unit of measure 100/Pack
Delivery by Wed, Oct 22
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 12" x 15 1/2", Kraft, 100/Box (37810)~#|#~s0288241_sc7
Item: 510664
Model: QUA37810
Price is $87.89
Unit of measure 100/Box Price per unit $0.88/Envelope
Free delivery by Fri, Oct 17
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Quality Park Tyvek Self-Adhesive Envelope, #55, 14-lb., White, 6" x 9", 100/Bx~#|#~s0046157_sc7Quality Park Tyvek Self-Adhesive Envelope, #55, 14-lb., White, 6" x 9", 100/Bx~#|#~s0171508_sc7
Item: 827973
Model: QUAR1320
Price is $81.79
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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Quality Park Redi-Strip Business #10 Envelopes, 4 1/8" x 9 1/2", White, 500/Bx~#|#~s0477871_sc7
Item: QUA69022
Model: QUA69022
No reviews yet
Price is $93.59
Unit of measure 500/Box
Free delivery by Fri, Oct 17
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Quality Park Tyvek Self Seal Booklet Envelope 10" x 13", White, 100/Box (QUAR4510)~#|#~s0293000_sc7Quality Park Tyvek Self Seal Booklet Envelope 10" x 13", White, 100/Box (QUAR4510)~#|#~s0171548_sc7
Item: 813470
Model: QUAR4510
Price is $230.29
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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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 Wed, Oct 22
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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 Tue, Oct 21
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JAM Paper #4 Coin Envelope, 3" x 4 1/2", Brown Kraft, 50/Pack (356731206C)~#|#~m004543255_sc7JAM Paper #4 Coin Envelope, 3" x 4 1/2", Brown Kraft, 50/Pack (356731206C)~#|#~m004543254_sc7
Item: 2329361
Model: 356731206C
Price is $10.29
Unit of measure 50/Pack
Delivery by Wed, Oct 22
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Quality Park First Class Redi-Strip Redi-Seal Catalog Envelope, 10" x 13", White/Green Border, 100/Box (44786)~#|#~s0298034_sc7Quality Park First Class Redi-Strip Redi-Seal Catalog Envelope, 10" x 13", White/Green Border, 100/Box (44786)~#|#~s0171367_sc7
Item: QUA44786
Model: QUA44786
No reviews yet
Price is $52.89
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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Staples Clasp & Gummed Catalog Envelopes, 10"L x 13"H, Bright White, 100/Box (570231N)~#|#~9247A566-A840-41B3-BB64C9F71CCCAB78_sc7Staples Clasp & Gummed Catalog Envelopes, 10"L x 13"H, Bright White, 100/Box (570231N)~#|#~339090E5-6068-4E2D-84FDAAD194F32F48_sc7
Item: 570231
Model: ST570231N-CC
Price is $42.99
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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Ship-Lite Self Seal Booklet Envelope 10" x 15", White, 100/Carton (SLE10152WS)~#|#~sp22942692_sc7
Item: 947672
Model: SLE10152WS
Price is $192.19
Unit of measure 100/Carton
Free delivery by Wed, Oct 22
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LUX Self Seal Booklet Envelope, 5 1/2" x 7 1/2", Bright White, 250/Pack (11700-250)~#|#~sp14807349_sc7
Item: 24261017
Model: 11700-250
No reviews yet
Price is $45.59
Unit of measure 250/Pack
Free delivery by Fri, Oct 24
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Quality Park Redi-Strip Security Tinted #10 Envelopes, 4-1/8" x 9-1/2", White, 30/Box (QUA69112)~#|#~s0375270_sc7Quality Park Redi-Strip Security Tinted #10 Envelopes, 4-1/8" x 9-1/2", White, 30/Box (QUA69112)~#|#~s0171469_sc7
Item: 813435
Model: QUA69112
Price is $15.89
Unit of measure 30/Box
Delivery by Fri, Oct 17
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JAM PAPER Self Seal Catalog Envelopes, 5 1/2" x 7 1/2", Brown Kraft Manila, 100/Pack (400238465D)~#|#~26730DBE-54FB-4539-848979245847A148_sc7JAM PAPER Self Seal Catalog Envelopes, 5 1/2" x 7 1/2", Brown Kraft Manila, 100/Pack (400238465D)~#|#~0A04909B-0406-4C3A-9948FA2FFBCA1358_sc7
Item: 24557954
Model: 400238465D
No reviews yet
Price is $28.29
Unit of measure 100/Pack
Delivery by Wed, Oct 22
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Quality Park Clasp Catalog Envelope, 9" x 12", White, 100/Box (38390)~#|#~s0055833_sc7Quality Park Clasp Catalog Envelope, 9" x 12", White, 100/Box (38390)~#|#~m000015892_sc7
Item: 507862
Model: QUA38390
Price is $63.49
Unit of measure 100/Box
Free delivery by Tue, Oct 21
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JAM Paper 9 x 12 Booklet Commercial Envelopes, White, 25/Pack (13751)~#|#~sp111772360_sc7JAM Paper 9 x 12 Booklet Commercial Envelopes, White, 25/Pack (13751)~#|#~sp111772359_sc7
Item: 366148
Model: 13751
Price is $16.59
Unit of measure 25/Pack
Delivery by Wed, Oct 22
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Quality Park Survivor Tyvek Self Seal Document Envelope 10" x 13", White, 100/Box (QUAR2420)~#|#~sp42114217_sc7Quality Park Survivor Tyvek Self Seal Document Envelope 10" x 13", White, 100/Box (QUAR2420)~#|#~sp42114216_sc7
Item: 70505
Model: QUAR2420
No reviews yet
Price is $225.09
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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Quality Park Redi-Seal Kraft Catalog Envelope, 9" x 12", Brown, 100/Box (43511)~#|#~s0341571_sc7
Item: 802220
Model: QUA43511
Price is $25.29
Unit of measure 100/Box
Delivery by Tue, Oct 21
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Staples Gummed Kraft Catalog Envelopes, 11.5" x 14.5", Brown, 100/Box (SPL534776)~#|#~07B1025A-E228-49F9-83E5FEA57476680B_sc7Staples Gummed Kraft Catalog Envelopes, 11.5" x 14.5", Brown, 100/Box (SPL534776)~#|#~E43F2E37-C7A7-4707-9683CF1C4398A9B5_sc7
Item: 534776
Model: ST19821
Price is $55.09
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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Quality Park Kraft #3 Envelope 2 1/2" x 4 1/4", Brown, 500/Box (QUA50262)~#|#~sp46039004_sc7
Item: 638568
Model: QUA50262
Price is $44.29
Unit of measure 500/Box
Free delivery by Fri, Oct 17
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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, 50/Pack (24529-50)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal Security Tinted #9 Double Window Envelope, 3 7/8" x 8 7/8", White Wove, 50/Pack (24529-50)~#|#~s1196808_sc7
Item: 23996120
Model: 24529-50
Price is $39.09
Unit of measure 50/Pack
Free delivery by Fri, Oct 24
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Quality Park Tyvek Open End Flap-Stik Expansion Self Seal Catalog Envelope, 12" x 16" x 2", White, 100/Carton (R4650)~#|#~s0171555_sc7
Item: 427811
Model: QUAR4650
No reviews yet
Price is $403.89
Unit of measure 100/Carton
Free delivery by Fri, Oct 17
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JAM Paper Open End #15 1/2 Catalog Envelope, 12" x 15 1/2", White, 25/Pack (1623202)~#|#~sp111772503_sc7JAM Paper Open End #15 1/2 Catalog Envelope, 12" x 15 1/2", White, 25/Pack (1623202)~#|#~sp111772502_sc7
Item: 366717
Model: 1623202
Price is $20.79
Unit of measure 25/Pack
Delivery by Wed, Oct 22
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Staples Self Seal Catalog Envelopes, 9"L x 12"H, White, 100/Box (19295VP)~#|#~s1224468_sc7Staples Self Seal Catalog Envelopes, 9"L x 12"H, White, 100/Box (19295VP)~#|#~s1224470_sc7
Item: 260612
Model: ST19295VP-CC
Price is $53.09
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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JAM Paper Plastic Envelopes with Button and String Tie Closure, Legal Size, Clear, 12/Pack (219B1CL)~#|#~sp42125163_sc7JAM Paper Plastic Envelopes with Button and String Tie Closure, Legal Size, Clear, 12/Pack (219B1CL)~#|#~sp42125162_sc7
Item: 262992
Model: 219B1CL
Price is $43.59
Unit of measure 12/Pack Price per unit $3.63/Envelope
Free delivery by Wed, Oct 22
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 25/Pack (15861)~#|#~sp111772444_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Blue, 25/Pack (15861)~#|#~sp111772442_sc7
Item: 263914
Model: 15861
Price is $10.29
Unit of measure 25/Pack
Delivery by Wed, Oct 22
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Quality Park Redi-Strip Security Tinted #10 Treated Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box ~#|#~s1154906_sc7Quality Park Redi-Strip Security Tinted #10 Treated Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box ~#|#~s1172750_sc7
Item: 683586
Model: QUA90019R
Price is $95.99
Unit of measure 500/Box
Free delivery by Fri, Oct 17
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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 Fri, Oct 17
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Staples Gummed Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (534719/17095)~#|#~s1225277_sc7Staples Gummed Kraft Catalog Envelopes, 7.5"L x 10.5"H, Brown, 100/Box (534719/17095)~#|#~s1225276_sc7
Item: 534719
Model: ST534719-CC
Price is $31.69
Unit of measure 100/Box
Delivery by Fri, Oct 17
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LUX 11 1/2 x 14 1/2 Open End Envelopes 50/Pack, 28lb. Bright White (4166-50)~#|#~sp14807484_sc7
Item: 24261049
Model: 4166-50
Price is $45.09
Unit of measure 50/Pack
Free delivery by Fri, Oct 24
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Quality Park Gummed Open Side Booklet Style Catalog Envelopes, 10" x 13", White, 100/Bx~#|#~s0511676_sc7
Item: QUA37613
Model: QUA37613
No reviews yet
Price is $63.29
Unit of measure 100/Box
Free delivery by Fri, Oct 17
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Staples Self Seal #1 Catalog Envelopes, 6"L x 9"H, White, 100/Box (SPL609121)~#|#~6FB98856-FED3-4AAA-B3A77C841692C042_sc7Staples Self Seal #1 Catalog Envelopes, 6"L x 9"H, White, 100/Box (SPL609121)~#|#~3A8317F0-2080-42E0-A7E34F518DF6E0E0_sc7
Item: 609121
Model: ST50160-CC
Price is $33.89
Unit of measure 100/Box
Delivery by Fri, Oct 17
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JAM Paper Self Seal Catalog Envelope, 10 1/2" x 7 1/2", Brown Kraft Manila, 100/Pack (13034230D)~#|#~07C4B61C-FF55-4935-8A01EA16C3FD1ADE_sc7
Item: 24557947
Model: 13034230D
No reviews yet
Price is $38.49
Unit of measure 100/Pack
Free delivery by Wed, Oct 22
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JAM Paper #15 1/2 Catalog Envelope, 12" x 15 1/2", Brown Kraft, 100/Pack (900493255)~#|#~sp111772336_sc7JAM Paper #15 1/2 Catalog Envelope, 12" x 15 1/2", Brown Kraft, 100/Pack (900493255)~#|#~sp111772335_sc7
Item: 24365023
Model: 900493255
No reviews yet
Price is $56.49
Unit of measure 100/Pack
Free delivery by Wed, Oct 22
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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 Fri, Oct 24
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JAM Paper Open End Catalog Envelope, 6" x 9", White, 50/Pack (1623192I)~#|#~sp111772487_sc7JAM Paper Open End Catalog Envelope, 6" x 9", White, 50/Pack (1623192I)~#|#~sp111772486_sc7
Item: 24052394
Model: 1623192I
Price is $15.29
Unit of measure 50/Pack
Delivery by Wed, Oct 22
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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.