Quality Park Gummed Clasp Envelopes, 8 3/4" x 11 1/2", Brown, 100/Bx~#|#~s0171259_sc7
Quality Park Clasp & Moistenable Glue Kraft Catalog Envelopes, 8.75" x 11.5", Brown Kraft, 100/Box (QUA37787) is New at Staples
Item: QUA37787
Model: QUA37787
Price is $127.19
Unit of measure Box
Free delivery by Fri, May 01
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JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 1000/Carton (15887B)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4.125 x 9.5, Orange Recycled, Bulk 1000/Carton (15887B)~#|#~m003904555_sc7
Item: 1589520
Model: 15887B
No reviews yet
Price is $362.99
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Lilac Purple, 25/Pack (241332378)~#|#~sp4808511_sc7JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Lilac Purple, 25/Pack (241332378)~#|#~sp4808510_sc7
Item: 2632864
Model: 241332378
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Wed, May 06
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LUX 5 x 5 Square Envelopes, 1000/Box, White Linen (8505-WLI-1000)~#|#~m000081536_sc7
Item: 514829
Model: 8505-WLI-1000
No reviews yet
Price is $205.69
Free delivery by Fri, May 08
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LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Anthracite Metallic Gray, 50/Pack~#|#~m004940420_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Anthracite Metallic Gray, 50/Pack~#|#~m005823900_sc7
Item: 281914
Model: 5360-15-50
No reviews yet
Price is $27.95
Unit of measure 50/Pack
Delivery by Fri, May 08
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Vista Metallic Blue, 500/BX~#|#~m000081324_sc7
Item: 385050
Model: 5360-29-500
No reviews yet
Price is $179.49
Unit of measure 500/Box
Free delivery by Fri, May 08
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JAM Paper 9 x 9 Square Invitation Envelopes, Black Linen, 50/Pack (V01215I)~#|#~m003905219_sc7JAM Paper 9 x 9 Square Invitation Envelopes, Black Linen, 50/Pack (V01215I)~#|#~m003905218_sc7
Item: 1588415
Model: V01215I
No reviews yet
Price is $49.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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LUX 5 1/4 x 5 1/4 Square Envelopes 50/Pack, Natural Linen (8510-NLI-50)~#|#~sp14807801_sc7
Item: 24261299
Model: 8510-NLI-50
No reviews yet
Price is $20.29
Unit of measure 50/Pack
Delivery by Fri, May 08
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JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Primary Yellow, 50/Pack (PACV606I)~#|#~m003905183_sc7JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Primary Yellow, 50/Pack (PACV606I)~#|#~m003905182_sc7
Item: 1589048
Model: PACV606I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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JAM Paper 6 x 6 Kraft Square Invitation Envelopes, Brown Kraft Paper Bag, Bulk 250/Box (LEKR502H)~#|#~m002168980_sc7
Item: 1589758
Model: LEKR502H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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JAM Paper 10 x 13 Open End Foil Envelopes with Self-Adhesive Closure, Green, 25/Pack (1327713)~#|#~m000067471_sc7
Item: 260925
Model: 1327713
No reviews yet
Price is $48.99
Unit of measure 25/Pack
Free delivery by Wed, May 06
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LUX A2 (4 3/8 x 5 3/4) 1000/Box, Limelight (LUX-4870-101-10)~#|#~m000081798_sc7
Item: 388542
Model: LUX-4870-101-10
No reviews yet
Price is $128.99
Unit of measure 1000/Box
Free delivery by Fri, May 08
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Over 30
LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Anthracite Metallic Gray, 250/BX~#|#~m004940420_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Anthracite Metallic Gray, 250/BX~#|#~m005823900_sc7
Item: 385005
Model: 5360-15-250
No reviews yet
Price is $113.69
Unit of measure 250/Box
Free delivery by Fri, May 08
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Natural w/Red LUX Lining (FLNT4880-01-500)~#|#~m000082054_sc7
Item: 513909
Model: FLNT4880-01-500
No reviews yet
Price is $129.69
Free delivery by Fri, May 08
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Seafoam (LUX-4865-113-50)~#|#~m000081735_sc7
Item: 282399
Model: LUX-4865-113-50
No reviews yet
Price is $12.69
Unit of measure 50/Pack
Delivery by Fri, May 08
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JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Dark Purple, 50/Pack (563912527I)~#|#~m003905007_sc7JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Dark Purple, 50/Pack (563912527I)~#|#~m003905006_sc7
Item: 1588389
Model: 563912527I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Silver, Bulk 1000/Carton (V018243B)~#|#~m004672478_sc7JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Silver, Bulk 1000/Carton (V018243B)~#|#~m004672477_sc7
Item: 262061
Model: V018243B
No reviews yet
Price is $677.99
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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LUX 60lb 5 3/4"x8 3/4" A9 Invitation Envelopes W/Peel&Press, White/Red, 500/BX~#|#~m000082191_sc7
Item: 513780
Model: FLWH4895-01-500
No reviews yet
Price is $160.79
Free delivery by Fri, May 08
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JAM Paper Expandable Open End Catalog Envelopes with Peel & Seal Closure, 10 x 12 x 4, White, 250/Box (376634180b)~#|#~sp74203826_sc7JAM Paper Expandable Open End Catalog Envelopes with Peel & Seal Closure, 10 x 12 x 4, White, 250/Box (376634180b)~#|#~sp74203560_sc7
Item: 24295229
Model: 376634180B
No reviews yet
Price is $788.99
Unit of measure 250/Pack
Free delivery by Wed, May 06
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Smoke (EX4880-22-1000)~#|#~m005902333_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Smoke (EX4880-22-1000)~#|#~m005823972_sc7
Item: 386663
Model: EX4880-22-1000
No reviews yet
Price is $187.49
Unit of measure 1000/Box
Free delivery by Fri, May 08
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JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Clear, Bulk 250/Box (74354H)~#|#~m002168462_sc7
Item: 1589814
Model: 74354H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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LUX 6 x 6 Square Envelopes 50/Pack, Midnight Black (F-8525-B-50)~#|#~sp14807800_sc7
Item: 24260442
Model: F-8525-B-50
No reviews yet
Price is $21.39
Unit of measure 50/Pack
Delivery by Fri, May 08
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LUX 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Peel & Press, White/Silver LUX, 1000/BX~#|#~m000082192_sc7
Item: 388473
Model: FLWH4895-03-100
No reviews yet
Price is $214.69
Unit of measure 1000/Box
Free delivery by Fri, May 08
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Natural White - 100% Cotton (4865-SN-500)~#|#~m000161368_sc7
Item: 515396
Model: 4865-SN-500
No reviews yet
Price is $101.29
Free delivery by Fri, May 08
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LUX 70lbs. 4 3/4" x 6 1/2" A6 Invitation Envelopes W/Peel & Press, Natural/Gold LUX~#|#~m000081933_sc7
Item: 388368
Model: FLNT4875-04-100
No reviews yet
Price is $171.39
Unit of measure 1000/Box
Free delivery by Fri, May 08
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JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792295I)~#|#~m003904799_sc7JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792295I)~#|#~m003904798_sc7
Item: 1588517
Model: 2792295I
No reviews yet
Price is $57.69
Unit of measure 50/Pack
Free delivery by Wed, May 06
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LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Pack, Blush (LUX-4885-39-50)~#|#~sp12274947_sc7LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Pack, Blush (LUX-4885-39-50)~#|#~sp12275042_sc7
Item: 24161951
Model: LUX-4885-39-50
No reviews yet
Price is $18.69
Unit of measure 50/Pack
Delivery by Fri, May 08
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Navy Blue, 250/BX~#|#~m000081279_sc7
Item: 388693
Model: LUX-7716-103-25
No reviews yet
Price is $114.89
Unit of measure 250/Box
Free delivery by Fri, May 08
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JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Sunflower, 250 Pack, Yellow (EX8555-12-250)~#|#~sp228873516_sc7
Item: 24578458
Model: EX8555-12-250
No reviews yet
Price is $51.69
Unit of measure 250/Pack
Free delivery by Wed, May 06
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, Baby Blue (LUX-4872-13-250)~#|#~m000081851_sc7
Item: 513685
Model: LUX-4872-13-250
No reviews yet
Price is $64.79
Free delivery by Fri, May 08
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JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Dark Red, 50/Pack (31511323I)~#|#~m002934226_sc7JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Dark Red, 50/Pack (31511323I)~#|#~m002934225_sc7
Item: 1588466
Model: 31511323I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 9.25 x 9.25, Clear, 1000/Carton (9.25X9.25CELLOB)~#|#~m006948449_sc7
Item: 262943
Model: 9.25X9.25CELLOB
No reviews yet
Price is $416.99
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Electric Orange, 1000/Pack (WS-7611-1000)~#|#~8C0B7760-54E5-4685-B6E8531BBB9EC0F8_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Electric Orange, 1000/Pack (WS-7611-1000)~#|#~59FF22A1-33F2-46B7-B0960876C5AFB9C0_sc7
Item: 23996862
Model: WS-7611-1000
No reviews yet
Price is $125.79
Unit of measure 1000/Pack
Free delivery by Fri, May 08
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JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Blush Pink, 250 Pack (4860-114-250)~#|#~sp226423804_sc7JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Blush Pink, 250 Pack (4860-114-250)~#|#~sp226423803_sc7
Item: 24578397
Model: 4860-114-250
No reviews yet
Price is $43.09
Unit of measure 250/Pack
Free delivery by Wed, May 06
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Over 30
LUX 80lbs. 5 1/4" x 7 1/4" A7 Invitation Envelopes W/Peel & Press, Black/Gold, 100/BX~#|#~m000082007_sc7
Item: 388349
Model: FLBK4880-04-100
No reviews yet
Price is $241.69
Unit of measure 1000/Box
Free delivery by Fri, May 08
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Over 30
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 1000/Box, Sunflower (EX4875-12-1000)~#|#~m000081956_sc7
Item: 386519
Model: EX4875-12-1000
No reviews yet
Price is $187.79
Unit of measure 1000/Box
Free delivery by Fri, May 08
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JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 1000/Carton (GCST508B)~#|#~m003905124_sc7JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 1000/Carton (GCST508B)~#|#~m003905123_sc7
Item: 262057
Model: GCST508B
No reviews yet
Price is $1,065.99
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 10 x 13, Clear, 1000/Carton (10X13CELLOB)~#|#~m000068422_sc7
Item: 262946
Model: 10X13CELLOB
No reviews yet
Price is $575.29
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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Over 30
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Natural Linen (4865-NLI-500)~#|#~m000161369_sc7
Item: 515429
Model: 4865-NLI-500
Price is $82.99
Free delivery by Fri, May 08
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JAM PAPER Self Seal #5 Coin Business Envelopes, 2 7/8" x 5 1/4", White, 50/Pack (356838555I)~#|#~6C407227-A6C6-4856-85A9AA1A7DD376F5_sc7
Item: 24557939
Model: 356838555I
No reviews yet
Price is $14.99
Unit of measure 50/Pack
Delivery by Wed, May 06
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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.