LUX 5 1/2 x 5 1/2 Square Envelopes, 1000/Box, Holiday Green (8515-12-1000)~#|#~m000081475_sc7
Item: 385712
Model: 8515-12-1000
No reviews yet
Price is $123.86
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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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 $156.99
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Jupiter Red, 50/Pack (SD5370 20I)~#|#~m002934281_sc7JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Jupiter Red, 50/Pack (SD5370 20I)~#|#~m002934280_sc7
Item: 1589057
Model: SD5370 20I
No reviews yet
Price is $49.59
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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JAM Paper #11 Policy Business Envelopes, 4.5 x 10.375, White, Bulk 500/Box (1623187H)~#|#~sp123308118_sc7JAM Paper #11 Policy Business Envelopes, 4.5 x 10.375, White, Bulk 500/Box (1623187H)~#|#~sp123308117_sc7
Item: 1589896
Model: 1623187H
No reviews yet
Price is $227.99
Unit of measure 500/Box
Free delivery by Mon, Feb 16
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JAM Paper 8.5 x 8.5 Kraft Square Invitation Envelopes, Brown Kraft Paper Bag, Bulk 250/Box (LEKR505H)~#|#~m002168981_sc7
Item: 1589757
Model: LEKR505H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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LUX 8 1/2 x 10 1/2 Open End Envelopes 50/Pack, Midnight Black (4892-B-50)~#|#~sp14807548_sc7
Item: 24260335
Model: 4892-B-50
No reviews yet
Price is $36.69
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX 80lbs. 5 1/4" x 7 1/4" A7 Invitation Envelopes W/Peel & Press, Smoke Gray/Silver, 1000/BX~#|#~m000082081_sc7
Item: 388423
Model: FLSM4880-03-100
No reviews yet
Price is $265.55
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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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 $18.09
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper 6.5 x 6.5 Square Invitation Envelopes, Chocolate Brown Recycled, 25/Pack (227912746)~#|#~sp4808528_sc7JAM Paper 6.5 x 6.5 Square Invitation Envelopes, Chocolate Brown Recycled, 25/Pack (227912746)~#|#~sp4808527_sc7
Item: 2632946
Model: 227912746
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Ruby Red, 50/Pack~#|#~m000081281_sc7
Item: 281892
Model: EX7716-18-50
Price is $42.59
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) 500/Box, Holiday Green (FE4270-12-500)~#|#~m000081752_sc7
Item: 514001
Model: FE4270-12-500
No reviews yet
Price is $72.39
Free delivery by Wed, Feb 18
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, Sunflower (EX4875-12-250)~#|#~m000081956_sc7
Item: 386526
Model: EX4875-12-250
No reviews yet
Price is $89.19
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, White w/Black LUX Lining (FLWH4872-02-50)~#|#~m004940487_sc7LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, White w/Black LUX Lining (FLWH4872-02-50)~#|#~m005823927_sc7
Item: 282571
Model: FLWH4872-02-50
No reviews yet
Price is $13.29
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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Over 30
LUX 5 x 5 Square Envelopes, 50/Box, Limelight (LUX-8505-101-50)~#|#~m000081527_sc7
Item: 282158
Model: LUX-8505-101-50
Price is $18.89
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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Over 30
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 $12.39
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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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 Mon, Feb 16
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Jupiter Metallic (5365-20-250)~#|#~m000081712_sc7
Item: 385119
Model: 5365-20-250
Price is $69.39
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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Over 30
LUX 9" x 9" Square Envelopes, Gold Metallic, 250/PK (8585-07-250)~#|#~m003307874_sc7
Item: 1985010
Model: 8585-07-250
No reviews yet
Price is $117.75
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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Over 30
LUX 9 x 12 Open End Envelopes 1000/Pack, Midnight Black (80428-1000)~#|#~sp14807538_sc7
Item: 24260247
Model: 80428-1000
No reviews yet
Price is $275.74
Unit of measure 1000/Pack
Free delivery by Wed, Feb 18
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LUX 6 1/2 x 6 1/2 Square Envelopes, 500/Box, Sunflower (EX8535-12-500)~#|#~m000081590_sc7
Item: 387321
Model: EX8535-12-500
No reviews yet
Price is $178.14
Unit of measure 500/Box
Free delivery by Wed, Feb 18
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JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Ocean Blue, 25/Pack (PACV532)~#|#~m000068157_sc7
Item: 262310
Model: PACV532
No reviews yet
Price is $38.49
Unit of measure 25/Pack
Free delivery by Mon, Feb 16
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Primary Red, 50/Pack (1592122I)~#|#~m002934319_sc7JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Primary Red, 50/Pack (1592122I)~#|#~m002934318_sc7
Item: 1588396
Model: 1592122I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 5 1/2 x 5 1/2 Square Envelopes, 500/Box, Seafoam (LUX-8515-113500)~#|#~m000081498_sc7
Item: 516895
Model: LUX-8515-113500
No reviews yet
Price is $149.86
Free delivery by Wed, Feb 18
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, Candy Pink (EX4875-14-250)~#|#~m000081902_sc7
Item: 386539
Model: EX4875-14-250
Price is $100.49
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX 5 1/2 x 5 1/2 Square Envelopes, 500/Box, Clear Translucent (8515-50-500)~#|#~m000081479_sc7
Item: 514819
Model: 8515-50-500
No reviews yet
Price is $194.59
Free delivery by Wed, Feb 18
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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 Mon, Feb 16
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LUX 9 x 12 Booklet Envelopes 50/Pack, Smoke (EX4899-22-50)~#|#~sp14807524_sc7
Item: 24260878
Model: EX4899-22-50
No reviews yet
Price is $39.29
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Platinum Silver, 50/Pack (PACV576I)~#|#~m002169024_sc7
Item: 1588525
Model: PACV576I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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JAM Paper 3.875 x 8.125 Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (32430262)~#|#~m004542973_sc7JAM Paper 3.875 x 8.125 Foil Lined Invitation Envelopes, White with Gold Foil, 25/Pack (32430262)~#|#~m004542972_sc7
Item: 2329311
Model: 32430262
No reviews yet
Price is $13.79
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Presidential Blue, 25/Pack (263912999)~#|#~sp137085032_sc7
Item: 261135
Model: 263912999
Price is $14.89
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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Over 30
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Seafoam (LUX-4865-113500)~#|#~m000081735_sc7
Item: 517513
Model: LUX-4865-113500
No reviews yet
Price is $95.89
Free delivery by Wed, Feb 18
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JAM Paper Square Envelopes, Peel & Press, 100lb Citrus Yellow, 6 1/4 x 6 1/4, 50 Pack, (8530-L20-50)~#|#~sp228873553_sc7
Item: 24578542
Model: 8530-L20-50
No reviews yet
Price is $18.89
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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Over 30
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 $20.98
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, Dark Grey, 50/Pack (36396431I)~#|#~m004671964_sc7JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, Dark Grey, 50/Pack (36396431I)~#|#~m004671963_sc7
Item: 1588705
Model: 36396431I
No reviews yet
Price is $17.99
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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Over 30
JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Silver, Bulk 1000/Carton (GCST659B)~#|#~m004672438_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Silver, Bulk 1000/Carton (GCST659B)~#|#~m004672437_sc7
Item: 262064
Model: GCST659B
No reviews yet
Price is $677.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Dark Red, Bulk 250/Box (31511323H)~#|#~m002934226_sc7JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Dark Red, Bulk 250/Box (31511323H)~#|#~m002934225_sc7
Item: 1589825
Model: 31511323H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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Over 30
JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Silver, Bulk 1000/Carton (GCST709B)~#|#~sp123307920_sc7JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Silver, Bulk 1000/Carton (GCST709B)~#|#~sp123307919_sc7
Item: 262065
Model: GCST709B
No reviews yet
Price is $692.09
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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Over 30
LUX 5 x 5 Square Envelopes, 50/Box, Midnight Black (F-8505-B-50)~#|#~m000081489_sc7
Item: 282159
Model: F-8505-B-50
No reviews yet
Price is $42.99
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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Over 30
LUX 6" x 9" Button & String Envelopes, 500/Box, 28lb. White (69BS-28W-500)~#|#~DA021BDB-1755-497A-87B444D11E81DD8F_sc7LUX 6" x 9" Button & String Envelopes, 500/Box, 28lb. White (69BS-28W-500)~#|#~2356E461-C43B-413E-9D05342A3AEAAB86_sc7
Item: 2444629
Model: 69BS-28W-500
No reviews yet
Price is $415.09
Unit of measure 500/Pack
Free delivery by Wed, Feb 18
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Over 30
JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Gold, 25/Pack (PACV617)~#|#~m003905186_sc7JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Gold, 25/Pack (PACV617)~#|#~m003905185_sc7
Item: 262249
Model: PACV617
No reviews yet
Price is $21.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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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.