Square Envelopes

JAM Paper 9 x 12 Booklet Envelopes, Baby Pink, 100/Pack (31512738c)~#|#~sp4211410_sc7JAM Paper 9 x 12 Booklet Envelopes, Baby Pink, 100/Pack (31512738c)~#|#~sp4211409_sc7
Item: 2478072
Model: 31512738C
No reviews yet
Price is $83.99
Unit of measure 100/Pack
Free delivery by Tue, May 05
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, White w/Black LUX Lining (FLWH4880-02-50)~#|#~m000082097_sc7
Item: 282844
Model: FLWH4880-02-50
Price is $35.69
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Business Envelopes, White With Silver LUX Lining, 250/BX~#|#~m000081264_sc7
Item: 387906
Model: FLWH4260-03-250
No reviews yet
Price is $66.29
Unit of measure 250/Box
Free delivery by Thu, May 07
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JAM Paper A9 Foil Lined Invitation Envelopes, 5.75 x 8.75, White with Red Foil, 50/Pack (76798I)~#|#~m003904630_sc7JAM Paper A9 Foil Lined Invitation Envelopes, 5.75 x 8.75, White with Red Foil, 50/Pack (76798I)~#|#~m003904629_sc7
Item: 1588719
Model: 76798I
Price is $31.49
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Wisteria Purple, 250/BX~#|#~m000081288_sc7
Item: 388708
Model: LUX-7716-106-25
No reviews yet
Price is $114.89
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX 9 x 12 Open End Envelopes 50/Pack, Smoke (EX4894-22-50)~#|#~sp14807569_sc7
Item: 24261083
Model: EX4894-22-50
No reviews yet
Price is $25.89
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 25/Pack (11789)~#|#~sp36388124_sc7JAM Paper Peel & Seal #10 Kraft Business Envelope, 4 1/8" x 9 1/2", Christmas Red, 25/Pack (11789)~#|#~sp36388044_sc7
Item: 263862
Model: 11789
Price is $10.29
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, 24lb. White~#|#~m004064012_sc7
Item: 2146367
Model: 39892-MI-250
No reviews yet
Price is $63.59
Unit of measure 250/Pack
Free delivery by Thu, May 07
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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 $158.09
Unit of measure 500/Box
Free delivery by Thu, May 07
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LUX 8" x 8" Square Envelopes, Ruby Red, 50/PK (LUX-8565-18-50)~#|#~m003307875_sc7
Item: 1985072
Model: LUX-8565-18-50
No reviews yet
Price is $31.09
Unit of measure 50/Box
Delivery by Thu, May 07
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Grocery Bag Brown, 250/BX~#|#~m004940396_sc7LUX 70lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Grocery Bag Brown, 250/BX~#|#~m005823987_sc7
Item: 384583
Model: 4860-GB-250
No reviews yet
Price is $75.09
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Pack, Gray - 100% Cotton (4880-SG-50)~#|#~sp14807898_sc7
Item: 24261155
Model: 4880-SG-50
No reviews yet
Price is $25.89
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX Square Flap Self Seal #10 Invitation Envelope, 4 1/2" x 9 1/2", Candy Pink, 50/Pack (EX4860-14-50)~#|#~sp14807476_sc7
Item: 24261022
Model: EX4860-14-50
No reviews yet
Price is $25.89
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 500/Box (4023213D)~#|#~m002934506_sc7JAM Paper A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 500/Box (4023213D)~#|#~m002934505_sc7
Item: 2103321
Model: 4023213D
Price is $127.49
Unit of measure 500/Box
Free delivery by Tue, May 05
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JAM Paper #3 Coin Envelope, 2 1/2" x 4 1/4", White, 1000/Carton (01623183B)~#|#~sp137086854_sc7JAM Paper #3 Coin Envelope, 2 1/2" x 4 1/4", White, 1000/Carton (01623183B)~#|#~sp137086232_sc7
Item: 362624
Model: 01623183B
Price is $155.89
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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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
Price is $22.69
Unit of measure 100/Pack
Delivery by Tue, May 05
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70 lb 4" x 4" Peel & Press Square Envelopes, Grocery Bag Brown, 50/Pack~#|#~m001149704_sc7
Item: 1030021
Model: 8504-GB-50
No reviews yet
Price is $19.89
Delivery by Thu, May 07
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Sunflower Yellow, 500/BX~#|#~m000081284_sc7
Item: 386917
Model: EX7716-12-500
No reviews yet
Price is $214.59
Unit of measure 500/Box
Free delivery by Thu, May 07
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Ruby Red (EX4870-18-50)~#|#~m000081820_sc7
Item: 282501
Model: EX4870-18-50
No reviews yet
Price is $14.29
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 80lbs. 3 5/8" x 5 1/8" A1 RSVP, Invitation Envelopes W/Peel & Press, Pool Blue, 250/BX~#|#~m000081726_sc7
Item: 388519
Model: LUX-4865-102-25
No reviews yet
Price is $47.79
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX 7 1/4" x 5 1/4" 70lbs Square Flap Vertical Envelopes W/Peel & Press, Bright White~#|#~96B1A5D7-B1FB-479F-A86CCE11028BC25D_sc7
Item: 282861
Model: 4880V-W-50
No reviews yet
Price is $17.59
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX 9" x 12" Open End Window Envelopes, Mandarin Orange (LUX-1590-11-50)~#|#~m001406669_sc7
Item: 1277742
Model: LUX-1590-11-50
No reviews yet
Price is $58.39
Unit of measure 50/Pack
Free delivery by Thu, May 07
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JAM Paper 6.5 x 6.5 Square Colored Invitation Envelopes, Green Recycled, 25/Pack (2792279)~#|#~m003904797_sc7JAM Paper 6.5 x 6.5 Square Colored Invitation Envelopes, Green Recycled, 25/Pack (2792279)~#|#~m003904796_sc7
Item: 235556
Model: 2792279
No reviews yet
Price is $27.29
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper 6 x 9 Open End Catalog Colored Envelopes, Orange Recycled, 25/Pack (88129a)~#|#~sp123308282_sc7JAM Paper 6 x 9 Open End Catalog Colored Envelopes, Orange Recycled, 25/Pack (88129a)~#|#~sp20131792_sc7
Item: 24295035
Model: 88129A
No reviews yet
Price is $16.19
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Baby Pink, 25/Pack (155698)~#|#~m000067693_sc7
Item: 261383
Model: 155698
No reviews yet
Price is $19.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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Partners Brand Tyvek Self Seal #10 Catalog Envelope 9" x 12", White, 100/Carton (TYE09122WE)~#|#~186D4473-8E93-4AB9-9A092BADA077E365_sc7
Item: 947684
Model: TYE09122WE
Price is $236.59
Unit of measure 100/Carton
Free delivery by Tue, May 05
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JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 25/Pack (356730549)~#|#~m003757871_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 25/Pack (356730549)~#|#~m003562857_sc7
Item: 2103445
Model: 356730549
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper 4Bar A1 Translucent Vellum Invitation Envelopes, 3.625 x 5.125, Spring Ochre Ivory, 25/Pack (1591612)~#|#~sp122682052_sc7JAM Paper 4Bar A1 Translucent Vellum Invitation Envelopes, 3.625 x 5.125, Spring Ochre Ivory, 25/Pack (1591612)~#|#~sp122682048_sc7
Item: 262221
Model: 1591612
No reviews yet
Price is $29.59
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Taupe Metallic (5380-M09-250)~#|#~m005902320_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Taupe Metallic (5380-M09-250)~#|#~m005823888_sc7
Item: 2146115
Model: 5380-M09-250
No reviews yet
Price is $102.39
Unit of measure 250/Pack
Free delivery by Thu, May 07
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Grey, 25/Pack (36396432)~#|#~m004671966_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Grey, 25/Pack (36396432)~#|#~m004671965_sc7
Item: 261449
Model: 36396432
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Teal, 25/Pack (157463)~#|#~m003904716_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Teal, 25/Pack (157463)~#|#~m003904715_sc7
Item: 363848
Model: 157463
Price is $20.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, 25/Pack (155438)~#|#~sp131391491_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, 25/Pack (155438)~#|#~sp131391490_sc7
Item: 261153
Model: 155438
No reviews yet
Price is $8.99
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX 80 lb 2 1/4" x 3 1/2" Vellum #1 Coin Envelopes, Navy Blue, 250/Box~#|#~m001149697_sc7
Item: 1028544
Model: LUX-1CO-103-250
No reviews yet
Price is $77.59
Free delivery by Thu, May 07
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JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, 25/Pack (15887)~#|#~m003904556_sc7JAM Paper #10 Policy Business Colored Envelopes, 4 1/8" x 9 1/2", Orange Recycled, 25/Pack (15887)~#|#~m003904555_sc7
Item: 261230
Model: 15887
No reviews yet
Price is $14.89
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX 6 x 9 Open End Envelopes, Gold Metallic, 500/Box (1644-07-500)~#|#~38C4F61E-72C1-4A23-8EEFAF0E7B26E354_sc7LUX 6 x 9 Open End Envelopes, Gold Metallic, 500/Box (1644-07-500)~#|#~372C448C-60D4-48B9-B87B44AE3CC13C3D_sc7
Item: 1028643
Model: 1644-07-500
No reviews yet
Price is $159.99
Free delivery by Thu, May 07
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 500/Box, Pool (LUX-1CO-102-500)~#|#~m001149698_sc7
Item: 1029983
Model: LUX-1CO-102-500
No reviews yet
Price is $109.39
Free delivery by Thu, May 07
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Holiday Red (FE4280-15-250)~#|#~m000082035_sc7
Item: 387846
Model: FE4280-15-250
Price is $52.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 50/Pack (203642I)~#|#~sp121512226_sc7JAM Paper 2.375 x 2.375 Mini Square Envelopes, White, 50/Pack (203642I)~#|#~sp121512224_sc7
Item: 1588444
Model: 203642I
Price is $20.49
Unit of measure 50/Pack
Delivery by Tue, May 05
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Over 30
JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388)~#|#~sp61031269_sc7JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388)~#|#~sp61031267_sc7
JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388) is Out of stock
Item: 261829
Model: V021388
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Price is $73.19
Unit of measure 25/Pack
JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Ultra Fuchsia Pink, Bulk 500/Box (15847H)~#|#~m003904529_sc7JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Ultra Fuchsia Pink, Bulk 500/Box (15847H)~#|#~m003904528_sc7
JAM Paper #10 Business Colored Envelopes, 4.125 x 9.5, Ultra Fuchsia Pink, Bulk 500/Box (15847H) is Out of stock
Item: 1589650
Model: 15847H
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Price is $155.59
Unit of measure 500/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.