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Square Envelopes

JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Clear, 50/Pack (31284I)~#|#~m002168469_sc7JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Clear, 50/Pack (31284I)~#|#~m002168468_sc7
Item: 1588885
Model: 31284I
No reviews yet
Price is $47.99
Unit of measure 50/Pack
Free delivery by Tue, May 05
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 500/Box, Holiday Red (4872-R-500)~#|#~m000081860_sc7
Item: 516232
Model: 4872-R-500
No reviews yet
Price is $66.69
Free delivery by Thu, May 07
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m004940462_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Smoke Gray, 250/BX~#|#~m005824005_sc7
Item: 386342
Model: EX4860-22-250
No reviews yet
Price is $55.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX 10 x 13 Open End Envelopes 50/Pack, Electric Cherry (WS-5428-50)~#|#~sp5822112_sc7LUX 10 x 13 Open End Envelopes 50/Pack, Electric Cherry (WS-5428-50)~#|#~sp5873987_sc7
Item: 23995350
Model: WS-5428-50
No reviews yet
Price is $39.29
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 5 x 5 Square Envelopes, 50/Box, Clear Translucent (8505-50-50)~#|#~m000081524_sc7
Item: 282155
Model: 8505-50-50
No reviews yet
Price is $42.89
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX Slimline Invitation Envelopes (3 7/8 x 8 7/8) 250/Box, 80lb. Bright White (72973-80W-250)~#|#~m001149707_sc7
Item: 1029956
Model: 72973-80W-250
No reviews yet
Price is $61.39
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Ruby Red (EX4865-18-50)~#|#~m000081733_sc7
Item: 282397
Model: EX4865-18-50
No reviews yet
Price is $16.89
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 9 x 12 Booklet Envelopes, Navy Blue, 50/Pack (263916011i)~#|#~sp121512570_sc7JAM Paper 9 x 12 Booklet Envelopes, Navy Blue, 50/Pack (263916011i)~#|#~sp121512569_sc7
Item: 2478160
Model: 263916011I
No reviews yet
Price is $92.19
Unit of measure 50/Pack
Free delivery by Tue, May 05
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JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Green Recycled, 50/Pack (95625I)~#|#~m003904687_sc7JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Green Recycled, 50/Pack (95625I)~#|#~m003904688_sc7
Item: 1589141
Model: 95625I
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX 6 1/2 x 6 1/2 Square Envelopes, 1000/Box, 70lb. Bright White (10928-1000)~#|#~m000081546_sc7
Item: 516613
Model: 10928-1000
No reviews yet
Price is $143.89
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Copper Metallic (5365-11-50)~#|#~m000081698_sc7
Item: 282360
Model: 5365-11-50
No reviews yet
Price is $18.59
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX #10 Square Flap Envelopes (4 1/8 x 9 1/2) 50/Pack, Midnight Black (F-4560-B-50)~#|#~sp14807461_sc7
Item: 24260629
Model: F-4560-B-50
Price is $12.69
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, Black Linen with Gold Foil, 50/Pack (3243678I)~#|#~m002934336_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, Black Linen with Gold Foil, 50/Pack (3243678I)~#|#~m002934337_sc7
Item: 1588839
Model: 3243678I
Price is $38.09
Unit of measure 50/Pack
Free delivery by Tue, May 05
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LUX 4 1/4" x 6 1/4" A4 Photo, Invitation Envelopes W/Peel & Press, Natural/Black LUX, 1000/BX~#|#~m004940480_sc7LUX 4 1/4" x 6 1/4" A4 Photo, Invitation Envelopes W/Peel & Press, Natural/Black LUX, 1000/BX~#|#~m005823920_sc7
Item: 388361
Model: FLNT4872-02-100
No reviews yet
Price is $158.69
Unit of measure 1000/Box
Free delivery by Thu, May 07
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JAM Paper 9 x 12 Open End Foil Envelopes with Self-Adhesive Closure, Red Holly, 25/Pack (1333313)~#|#~m000067492_sc7
Item: 260916
Model: 1333313
No reviews yet
Price is $49.99
Unit of measure 25/Pack
Free delivery by Tue, May 05
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Copper Metallic (5375-11-50)~#|#~m000081698_sc7
Item: 282601
Model: 5375-11-50
No reviews yet
Price is $24.95
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Gold, 25/Pack (PACV867)~#|#~m003905199_sc7JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Gold, 25/Pack (PACV867)~#|#~m003905198_sc7
Item: 262252
Model: PACV867
No reviews yet
Price is $36.99
Unit of measure 25/Pack
Free delivery by Tue, May 05
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Taupe Metallic (5380-M09-500)~#|#~m005902320_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Taupe Metallic (5380-M09-500)~#|#~m005823888_sc7
Item: 2146114
Model: 5380-M09-500
No reviews yet
Price is $204.69
Unit of measure 500/Pack
Free delivery by Thu, May 07
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LUX 3 5/8" x 5 1/8" 80lbs. A1 Invitation Envelopes W/Glue, Aquamarine Metallic, 50/Pack (5365-02-50)~#|#~m000081684_sc7
Item: 282346
Model: 5365-02-50
No reviews yet
Price is $14.69
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper A8 Foil Lined Invitation Envelopes, 5.5 x 8.125, White with Red Foil, 50/Pack (3243657I)~#|#~m005223351_sc7JAM Paper A8 Foil Lined Invitation Envelopes, 5.5 x 8.125, White with Red Foil, 50/Pack (3243657I)~#|#~m005223350_sc7
Item: 1589168
Model: 3243657I
No reviews yet
Price is $24.29
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX Self Seal Nonstandard Invitation Envelope, 6 1/4" x 6 1/4", Midnight Black, Each (LUX-8530-B-500)~#|#~m001149685_sc7
Item: 1028512
Model: LUX-8530-B-500
No reviews yet
Price is $117.39
Free delivery by Thu, May 07
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LUX 12 1/2 x 18 1/2 Kraft Jumbo Envelopes 250/Pack, Gray Kraft (92532-250)~#|#~sp14807712_sc7
Item: 24260533
Model: 92532-250
No reviews yet
Price is $223.59
Unit of measure 250/Pack
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Azalea Metallic (5365-24-50)~#|#~m000081686_sc7
Item: 282348
Model: 5365-24-50
No reviews yet
Price is $18.59
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper Kraft A9 Invitation Envelopes, 5.75 x 8.75, Brown Kraft Paper Bag, Bulk 1000/Carton (LEKR875B)~#|#~sp121511775_sc7JAM Paper Kraft A9 Invitation Envelopes, 5.75 x 8.75, Brown Kraft Paper Bag, Bulk 1000/Carton (LEKR875B)~#|#~sp121511774_sc7
Item: 261552
Model: LEKR875B
No reviews yet
Price is $412.49
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Natural - 100% Recycled (4880-NPC-1000)~#|#~m005902297_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Natural - 100% Recycled (4880-NPC-1000)~#|#~m000082049_sc7
Item: 516137
Model: 4880-NPC-1000
No reviews yet
Price is $171.19
Free delivery by Thu, May 07
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JAM Paper 6.5" x 6.5" Square Translucent Vellum Invitation Envelopes, Purple, 100/Pack (2812713B)~#|#~sp74308907_sc7JAM Paper 6.5" x 6.5" Square Translucent Vellum Invitation Envelopes, Purple, 100/Pack (2812713B)~#|#~sp74308931_sc7
Item: 38071
Model: 2812713B
No reviews yet
Price is $64.99
Unit of measure 100/Pack
Free delivery by Tue, May 05
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JAM Paper 6.25 x 7.875 Open End Catalog Foil Envelopes with Peel & Seal Closure, Blue, 100/Pack (01323271B)~#|#~sp137085831_sc7
Item: 260942
Model: 01323271B
No reviews yet
Price is $108.99
Unit of measure 100/Box
Free delivery by Tue, May 05
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Gray, 250/Pack (WS-7615-250)~#|#~949DF982-4459-4531-B384BBFC09218AED_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Gray, 250/Pack (WS-7615-250)~#|#~B4322885-8592-4CBC-98CCBE5C757B0D37_sc7
Item: 23996542
Model: WS-7615-250
No reviews yet
Price is $52.99
Unit of measure 250/Pack
Free delivery by Thu, May 07
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Gold Metallic, 1000/BX~#|#~m004940416_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Gold Metallic, 1000/BX~#|#~m005823910_sc7
Item: 384975
Model: 5360-07-1000
No reviews yet
Price is $279.99
Unit of measure 1000/Box
Free delivery by Thu, May 07
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JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, Bulk 500/Box (356730562H)~#|#~m003757874_sc7JAM Paper #6 Coin Business Envelopes, 3.375 x 6, Baby Pink, Bulk 500/Box (356730562H)~#|#~m003562859_sc7
Item: 2103376
Model: 356730562H
No reviews yet
Price is $219.59
Unit of measure 500/Box
Free delivery by Tue, May 05
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 1000/Box, Baby Blue (EX4865-13-1000)~#|#~m000081687_sc7
Item: 386368
Model: EX4865-13-1000
No reviews yet
Price is $160.99
Unit of measure 1000/Box
Free delivery by Thu, May 07
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LUX 4 1/8" x 9 1/2" #10 80lbs. Open End Envelopes, Seafoam Blue, 50/Pack~#|#~m000081282_sc7
Item: 281893
Model: LUX-7716-113-50
Price is $30.49
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 5 x 5 Square Envelopes, 50/Box, Black Linen (8505-BLI-50)~#|#~m000081520_sc7
Item: 282151
Model: 8505-BLI-50
No reviews yet
Price is $22.39
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 80lbs. 4 3/4" x 6 1/2" A6 Invitation Envelopes W/Peel & Press, Vintage Plum Purple, 250/BX~#|#~m000081963_sc7
Item: 388636
Model: LUX-4875-104-25
No reviews yet
Price is $62.79
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX 3.5 Mil 5 1/4"x7 1/4" A7 Invitation Envelopes W/Peel&Seal, Crystal Clear, 1000/BX~#|#~m000081564_sc7
Item: 514683
Model: CCA7-1000
No reviews yet
Price is $215.69
Free delivery by Thu, May 07
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JAM Paper Square Envelopes, Peel & Press, Seafoam, 3 1/4 x 3 1/4, 250 Pack (8503-113-250)~#|#~sp228873565_sc7
Item: 24578557
Model: 8503-113-250
No reviews yet
Price is $43.09
Unit of measure 250/Pack
Free delivery by Tue, May 05
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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
Quality Park Kraft #6 Envelope 3 3/8" x 6", Brown, 500/Box (QUA50662) is New at Staples
Item: QUA50662
Model: QUA50662
No reviews yet
Price is $65.62
Unit of measure 500/Box
Free delivery by Fri, May 01
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JAM Paper 9 x 12 Booklet Envelopes, Green Recycled, Bulk 250/Box (154124h)~#|#~m003904704_sc7JAM Paper 9 x 12 Booklet Envelopes, Green Recycled, Bulk 250/Box (154124h)~#|#~m003904703_sc7
Item: 24052290
Model: 154124H
No reviews yet
Price is $152.09
Unit of measure 250/Box
Free delivery by Tue, May 05
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Over 30
Ampad Gold Fibre Fastrip Release & Seal White Catalog Envelope, White, 9 x 12, 100/Box (73127)~#|#~m002272576_sc7
Ampad Gold Fibre Fastrip Release & Seal White Catalog Envelope, White, 9 x 12, 100/Box (73127) is Out of stock
Item: 2669191
Model: 73127
Price is $32.59
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.