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Square Envelopes

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, Apr 28
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Quality Park Survivor Tyvek Self Seal Catalog Envelopes, 10"L x 13"H, White, 25/Box (QUAR4202)~#|#~sp44490032_sc7Quality Park Survivor Tyvek Self Seal Catalog Envelopes, 10"L x 13"H, White, 25/Box (QUAR4202)~#|#~sp44490031_sc7
Item: 813458
Model: QUAR4202
Price is $78.69
Unit of measure 25/Box
Free delivery by Tue, Apr 28
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 6 1/2" x 9 1/2", Kraft, 100/Box (37763)~#|#~s0288241_sc7
Item: 377518
Model: QUA37763
No reviews yet
Price is $39.69
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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JAM Paper 6.5 x 9.5 Open End Catalog Envelopes, White, 50/Pack (1623193i)~#|#~sp105663282_sc7JAM Paper 6.5 x 9.5 Open End Catalog Envelopes, White, 50/Pack (1623193i)~#|#~sp105663280_sc7
Item: 24052387
Model: 1623193I
Price is $14.89
Unit of measure 50/Pack
Delivery by Mon, May 04
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Quality Park Survivor Tyvek Self Seal Inter-Departmental Envelope 9" x 12", White, 100/Box (QUAR2400)~#|#~sp44488061_sc7Quality Park Survivor Tyvek Self Seal Inter-Departmental Envelope 9" x 12", White, 100/Box (QUAR2400)~#|#~sp44488060_sc7
Item: 70510
Model: QUAR2400
Price is $274.99
Unit of measure 100/Box
Free delivery by Wed, Apr 29
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JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Violet Purple Recycled, 25/Pack (80278)~#|#~m003904638_sc7JAM Paper A7 Colored Invitation Envelopes, 5.25 x 7.25, Violet Purple Recycled, 25/Pack (80278)~#|#~m003904637_sc7
Item: 261110
Model: 80278
Price is $10.99
Unit of measure 25/Pack
Delivery by Mon, May 04
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 10 1/2" x 7 1/2", Brown, 100/Box (37875)~#|#~s0171272_sc7Quality Park Clasp & Moistenable Glue Kraft Catalog Envelope, 10 1/2" x 7 1/2", Brown, 100/Box (37875)~#|#~s0376479_sc7
Item: 823272
Model: QUA37875
Price is $37.19
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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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, May 04
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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 $54.99
Unit of measure 25/Pack
Free delivery by Tue, Apr 28
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Quality Park Redi-Strip Self Seal Catalog Envelope, 9" x 12", White, 100/Box (QUA44926)~#|#~s1186936_sc7
Item: 24452932
Model: QUA44926
Price is $78.89
Unit of measure 100/Box Price per unit $0.79/Envelope
Free delivery by Tue, Apr 28
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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, May 04
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Quality Park Kraft Security Tinted Inter-Departmental Envelope 10" x 13", Multi Colors, 100/Box (QUA63778)~#|#~sp41687907_sc7Quality Park Kraft Security Tinted Inter-Departmental Envelope 10" x 13", Multi Colors, 100/Box (QUA63778)~#|#~sp41687906_sc7
Item: 458290
Model: QUA63778
Price is $100.89
Unit of measure 100/Box
Free delivery by Wed, Apr 29
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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 $13.89
Unit of measure 50/Pack
Delivery by Wed, May 06
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Quality Park Redi-Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA11118)~#|#~sp40286632_sc7Quality Park Redi-Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (QUA11118)~#|#~sp40286631_sc7
Item: QUA11118
Model: QUA11118
Price is $77.39
Unit of measure Box
Free delivery by Wed, Apr 29
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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 $123.69
Unit of measure Box
Free delivery by Wed, Apr 29
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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 $24.99
Unit of measure 30/Box
Delivery by Tue, Apr 28
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Staples Extra-Heavyweight Clasp & Moistenable Glue #15 1/2 Catalog Envelope, 12" x 15 1/2", Beige, 100/Box (ST122150-CC)~#|#~ED4FBAF7-1910-43E5-AA227165B1A03555_sc7Staples Extra-Heavyweight Clasp & Moistenable Glue #15 1/2 Catalog Envelope, 12" x 15 1/2", Beige, 100/Box (ST122150-CC)~#|#~1EE1C288-2804-4DA7-A5C065C303D1149C_sc7
Item: 122150
Model: ST122150-CC
Price is $68.89
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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JAM Paper Self Seal Catalog Envelope, 10 1/2" x 7 1/2", Brown Kraft Manila, 50/Pack (13034230I)~#|#~ECFF9F10-05C1-46E5-AFC882F8534BA8AA_sc7
Item: 24557952
Model: 13034230I
Price is $21.59
Unit of measure 50/Pack
Delivery by Mon, May 04
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LUX 11 x 17 Jumbo Envelopes 50/Pack, 28lb. Bright White (85923-50)~#|#~sp14807916_sc7
Item: 24261125
Model: 85923-50
No reviews yet
Price is $66.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural (5880-01-50)~#|#~m000082050_sc7
Item: 282791
Model: 5880-01-50
No reviews yet
Price is $24.89
Unit of measure 50/Pack
Delivery by Wed, May 06
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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 Mon, May 04
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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 Mon, May 04
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JAM Paper Self Seal Catalog Envelope, 12" x 15 1/2", Brown Kraft, 50/Pack (13034236I)~#|#~26609F45-10E5-4299-85700D0F2F8053D0_sc7
Item: 24557949
Model: 13034236I
Price is $30.69
Unit of measure 50/Pack
Delivery by Mon, May 04
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Quality Park Self-Adhesive USPS First Class Mailer, #110, 14-lb., Green/White, 12" x 15 1/2", 100/Bx~#|#~s0292999_sc7Quality Park Self-Adhesive USPS First Class Mailer, #110, 14-lb., Green/White, 12" x 15 1/2", 100/Bx~#|#~s0171523_sc7
Item: QUAR1800
Model: QUAR1800
Price is $169.99
Unit of measure 100/Box
Free delivery by Thu, Apr 30
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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, White, 25/Pack (31820)~#|#~m003904578_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, White, 25/Pack (31820)~#|#~m003904577_sc7
Item: 365874
Model: 31820
Price is $9.89
Unit of measure 25/Pack
Delivery by Mon, May 04
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Quality Park Redi-Seal Self Seal #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 1000/Pack (24559-QP-1000)~#|#~sp5822112_sc7Quality Park Redi-Seal Self Seal #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 1000/Pack (24559-QP-1000)~#|#~sp80341907_sc7
Item: 23995459
Model: 24559-QP-1000
No reviews yet
Price is $225.49
Unit of measure 1000/Pack
Free delivery by Wed, May 06
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JAM Paper Self Seal A7 Invitation Envelope 5 1/4" x 7 1/4", Baby Pink, 25/Pack (155627)~#|#~sp137085709_sc7
Item: 261381
Model: 155627
Price is $14.29
Unit of measure 25/Pack
Delivery by Mon, May 04
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Quality Park Survivor Tyvek Self Seal Catalog Envelopes, 12" x 16", White, 100/Carton (QUAR4520)~#|#~sp49508231_sc7Quality Park Survivor Tyvek Self Seal Catalog Envelopes, 12" x 16", White, 100/Carton (QUAR4520)~#|#~sp49508230_sc7
Item: 892994
Model: QUAR4520
Price is $357.99
Unit of measure 100/Carton
Free delivery by Wed, Apr 29
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JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, White, 25/Pack (1623183)~#|#~sp111772483_sc7JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, White, 25/Pack (1623183)~#|#~sp111772482_sc7
Item: 362451
Model: 1623183
Price is $7.99
Unit of measure 25/Pack
Delivery by Mon, May 04
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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 $247.99
Unit of measure 100/Box
Free delivery by Tue, Apr 28
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Quality Park Kraft #6 Envelope 3 3/8" x 6", Brown, 500/Box (QUA50662)~#|#~sp42115989_sc7Quality Park Kraft #6 Envelope 3 3/8" x 6", Brown, 500/Box (QUA50662)~#|#~sp42115988_sc7
Item: 389378
Model: QUA50662
Price is $67.59
Unit of measure 500/Box
Free delivery by Tue, Apr 28
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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, May 04
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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
Price is $46.29
Unit of measure Box
Free delivery by Wed, Apr 29
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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 Thu, Apr 30
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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 Mon, May 04
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LUX A7 Gatefold Invitation (5 x 7) 50/Pack, Navy (LUXA7GF-103-50)~#|#~sp14807818_sc7
Item: 24260414
Model: LUXA7GF-103-50
No reviews yet
Price is $32.49
Unit of measure 50/Pack
Delivery by Wed, May 06
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Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 9.25" x 14.5", Brown Kraft, 100/Box (QUA37894)~#|#~sp42117054_sc7Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 9.25" x 14.5", Brown Kraft, 100/Box (QUA37894)~#|#~sp42117052_sc7
Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 9.25" x 14.5", Brown Kraft, 100/Box (QUA37894) is Out of stock
Item: 813480
Model: QUA37894
Price is $63.59
Unit of measure 100/Box
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.