JAM Paper 9 x 12 Booklet Translucent Vellum Envelopes, Wisteria Purple, 25/Pack (1592177)~#|#~m006965561_sc7JAM Paper 9 x 12 Booklet Translucent Vellum Envelopes, Wisteria Purple, 25/Pack (1592177)~#|#~m006965560_sc7
Item: 262293
Model: 1592177
No reviews yet
Price is $57.99
Unit of measure 25/Pack
Free delivery by Thu, May 07
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Silver Foil, 25/Pack (82927)~#|#~m004671873_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Silver Foil, 25/Pack (82927)~#|#~m004671872_sc7
Item: 262755
Model: 82927
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Thu, May 07
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LUX 6" x 9" Open End Envelopes 500/Pack, Candy Pink (EX1644-14-500)~#|#~367B0CB1-613F-4C7E-8E4EE05A7C90096E_sc7LUX 6" x 9" Open End Envelopes 500/Pack, Candy Pink (EX1644-14-500)~#|#~2EF73691-328D-41A6-8D75C0F5C330C6E5_sc7
Item: 24260954
Model: EX1644-14-500
No reviews yet
Price is $128.99
Unit of measure 500/Pack
Free delivery by Mon, May 11
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Bright White, 1000/BX (7535-1000)~#|#~DB7F205D-9E6A-46E0-8491E1C84AEFDB14_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Bright White, 1000/BX (7535-1000)~#|#~22EEA5ED-E9AD-40AE-B3AF07777DC2DF1A_sc7
Item: 385671
Model: 7535-1000
No reviews yet
Price is $215.59
Unit of measure 1000/Box
Free delivery by Mon, May 11
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LUX 6 x 6 Square Envelopes 50/Pack, Wisteria (LUX-8525-106-50)~#|#~sp14807808_sc7
Item: 24260427
Model: LUX-8525-106-50
Price is $13.09
Unit of measure 50/Pack
Delivery by Mon, May 11
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JAM Paper #7 Coin Business Colored Envelopes, 3.5 x 6.5, Orange Recycled, 25/Pack (1526755)~#|#~m003757918_sc7JAM Paper #7 Coin Business Colored Envelopes, 3.5 x 6.5, Orange Recycled, 25/Pack (1526755)~#|#~m003750599_sc7
Item: 1227746
Model: 1526755
No reviews yet
Price is $12.49
Unit of measure 25/Pack
Delivery by Thu, May 07
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Black Linen with Silver Foil, 50/Pack (3243688I)~#|#~m002934260_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Black Linen with Silver Foil, 50/Pack (3243688I)~#|#~m002934253_sc7
Item: 1589218
Model: 3243688I
No reviews yet
Price is $39.09
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 5 3/4" x 8 3/4" 80lbs. A9 Invitation Envelopes W/Peel & Press, Midnight Black, 50/Pack~#|#~m000081720_sc7
Item: 282931
Model: F-4595-B-50
Price is $18.95
Unit of measure 50/Pack
Delivery by Mon, May 11
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JAM Paper 10 x 13 Open End Catalog Envelopes, Dark Purple, 25/Pack (1287032a)~#|#~sp4800483_sc7JAM Paper 10 x 13 Open End Catalog Envelopes, Dark Purple, 25/Pack (1287032a)~#|#~sp4800482_sc7
Item: 24175171
Model: 1287032A
No reviews yet
Price is $33.39
Unit of measure 25/Pack
Delivery by Thu, May 07
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JAM Paper® 7.5 x 10.5 Open End Catalog Envelopes, White, Bulk 1000/Carton (4120D)~#|#~sp111772311_sc7JAM Paper® 7.5 x 10.5 Open End Catalog Envelopes, White, Bulk 1000/Carton (4120D)~#|#~sp111772310_sc7
Item: 24365208
Model: 4120D
No reviews yet
Price is $284.99
Unit of measure 1000/Pack
Free delivery by Thu, May 07
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JAM Paper 6 x 6 Square Invitation Envelopes, White, 50/Pack (28416I)~#|#~sp126919273_sc7JAM Paper 6 x 6 Square Invitation Envelopes, White, 50/Pack (28416I)~#|#~sp126919272_sc7
Item: 1588509
Model: 28416I
Price is $44.19
Unit of measure 50/Pack
Free delivery by Thu, May 07
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Over 30
LUX 80lb 4 1/8"x9 1/2" Open End #10 Envelopes, Wisteria Purple, 500/BX~#|#~m000081288_sc7
Item: 517171
Model: LUX-7716-106500
No reviews yet
Price is $201.99
Free delivery by Mon, May 11
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Lux Double Window Invoice Envelopes, 4 1/8 x 9 1/2, Midnight Black 250/Pack~#|#~m002084696_sc7
Item: 1559034
Model: INVDW-B-250
Price is $63.49
Free delivery by Mon, May 11
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Teal Blue, 50/Pack (63924024I)~#|#~sp134498426_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Teal Blue, 50/Pack (63924024I)~#|#~sp134498425_sc7
Item: 2633057
Model: 63924024I
No reviews yet
Price is $34.09
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper #3 Coin Business Colored Envelopes, 2.5 x 4.25, Orange Recycled, 50/Pack (356730538i)~#|#~sp4211523_sc7JAM Paper #3 Coin Business Colored Envelopes, 2.5 x 4.25, Orange Recycled, 50/Pack (356730538i)~#|#~sp4211522_sc7
Item: 2478040
Model: 356730538I
No reviews yet
Price is $19.39
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper A10 Invitation Envelopes, 6 x 9.5, White, Bulk 250/Box (12039H)~#|#~sp115352023_sc7JAM Paper A10 Invitation Envelopes, 6 x 9.5, White, Bulk 250/Box (12039H)~#|#~sp115352019_sc7
Item: 1589995
Model: 12039H
Price is $62.49
Unit of measure 250/Box
Free delivery by Thu, May 07
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Silver, 25/Pack (GCST709)~#|#~sp123307916_sc7JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Silver, 25/Pack (GCST709)~#|#~sp123307915_sc7
Item: 261988
Model: GCST709
Price is $29.89
Unit of measure 25/Pack
Delivery by Thu, May 07
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 9.25 x 9.25, Clear, 100/Pack (9.25X9.25CELLO)~#|#~m006948449_sc7
Item: 262912
Model: 9.25X9.25CELLO
No reviews yet
Price is $66.69
Unit of measure 100/Pack
Free delivery by Thu, May 07
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LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Bright White, 250/Box~#|#~m000211252_sc7
Item: 513631
Model: 4860-70W-250
No reviews yet
Price is $56.69
Free delivery by Mon, May 11
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LUX #10 All Purpose Window Envelopes(4 1/8 x 9 1/2) 50/Pack, 70lb. Grocery Bag (LUX-10APW-GB-50)~#|#~sp5822112_sc7LUX #10 All Purpose Window Envelopes(4 1/8 x 9 1/2) 50/Pack, 70lb. Grocery Bag (LUX-10APW-GB-50)~#|#~sp5875504_sc7
Item: 23996363
Model: LUX-10APW-GB-50
No reviews yet
Price is $24.99
Unit of measure 50/Pack
Delivery by Mon, May 11
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JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 1000/Pack (MOOP6250LDB)~#|#~m003904592_sc7JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 1000/Pack (MOOP6250LDB)~#|#~m003904591_sc7
Item: 366205
Model: MOOP6250LDB
Price is $127.49
Unit of measure 1000/Pack
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Holiday Red (FE4265-15-50)~#|#~m000081710_sc7
Item: 282372
Model: FE4265-15-50
No reviews yet
Price is $13.69
Unit of measure 50/Pack
Delivery by Mon, May 11
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LUX 70lbs. 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Glue, Natural, 250/BX~#|#~m000082171_sc7
Item: 385429
Model: 5895-01-250
No reviews yet
Price is $54.59
Unit of measure 250/Box
Free delivery by Mon, May 11
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Over 30
JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Jupiter Red, 25/Pack (SD5370 20)~#|#~m002934281_sc7JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Jupiter Red, 25/Pack (SD5370 20)~#|#~m002934280_sc7
Item: 262000
Model: SD5370 20
No reviews yet
Price is $28.29
Unit of measure 25/Pack
Delivery by Thu, May 07
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Over 30
LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 250/Pack, Garnet (LUX-1CO-26-250)~#|#~sp14807833_sc7
Item: 24261086
Model: LUX-1CO-26-250
No reviews yet
Price is $37.99
Unit of measure 250/Pack
Free delivery by Mon, May 11
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Black Linen, 50/Pack (64345I)~#|#~m003904604_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Black Linen, 50/Pack (64345I)~#|#~m003904603_sc7
Item: 1589082
Model: 64345I
No reviews yet
Price is $24.49
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 5.4375 x 8.625, Yellow, 100/Pack (2783145)~#|#~m000969574_sc7
Item: 235491
Model: 2783145
No reviews yet
Price is $68.69
Unit of measure 100/Pack
Free delivery by Thu, May 07
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Over 30
JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Navy Blue, Bulk 250/Box (LEBA667H)~#|#~m003905156_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Navy Blue, Bulk 250/Box (LEBA667H)~#|#~m003905155_sc7
Item: 1589016
Model: LEBA667H
No reviews yet
Price is $89.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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Over 30
LUX 5 1/2 x 5 1/2 Square Envelopes 50/Pack, Silver Metallic (8515-06-50)~#|#~sp14807744_sc7
Item: 24261244
Model: 8515-06-50
No reviews yet
Price is $22.49
Unit of measure 50/Pack
Delivery by Mon, May 11
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Over 30
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 500/Box, Natural (4872-01-500)~#|#~m000211233_sc7
Item: 516319
Model: 4872-01-500
No reviews yet
Price is $90.99
Free delivery by Mon, May 11
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Quartz Metallic (5365-08-250)~#|#~1D521796-EDB3-4EE0-9B854A228DA4CC19_sc7LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Quartz Metallic (5365-08-250)~#|#~A2F6EA33-59B7-4B7C-9E069FD153B2B86C_sc7
Item: 385068
Model: 5365-08-250
No reviews yet
Price is $65.29
Unit of measure 250/Box
Free delivery by Mon, May 11
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Wisteria Purple, 250/BX~#|#~m004940493_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Wisteria Purple, 250/BX~#|#~m005824014_sc7
Item: 388501
Model: LUX-4860-106-25
No reviews yet
Price is $77.99
Unit of measure 250/Box
Free delivery by Mon, May 11
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Holiday Green (FE4280-12-250)~#|#~m005902339_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Holiday Green (FE4280-12-250)~#|#~m005823952_sc7
Item: 387843
Model: FE4280-12-250
No reviews yet
Price is $40.89
Unit of measure 250/Box
Free delivery by Mon, May 11
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Over 30
JAM Paper Booklet Envelope 6 1/2" x 6 1/2", Dark Orange, 50/Pack (3157452i)~#|#~6257B3E9-5C1F-45BB-855D2AE2585B5830_sc7JAM Paper Booklet Envelope 6 1/2" x 6 1/2", Dark Orange, 50/Pack (3157452i)~#|#~A08553D2-C8D5-4A8F-A632016CC8B9FF3B_sc7
JAM Paper Booklet Envelope 6 1/2" x 6 1/2", Dark Orange, 50/Pack (3157452i) is Out of stock
Item: 24604556
Model: 3157452i
No reviews yet
Price is $58.99
Unit of measure 50/Pack
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Candy Pink (EX4875-14-50)~#|#~m000081902_sc7
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Candy Pink (EX4875-14-50) is Out of stock
Item: 282597
Model: EX4875-14-50
Price is $14.49
Unit of measure 50/Pack
Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (43667)~#|#~s0293005_sc7Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (43667)~#|#~s0171353_sc7
Quality Park Redi-Seal Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 100/Box (43667) is Out of stock
Item: 813431
Model: QUA43667
Unit of measure 100/Box
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Garnet (EX4875-26-50)~#|#~m000081911_sc7
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Garnet (EX4875-26-50) is Out of stock
Item: 282609
Model: EX4875-26-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
JAM Paper A6 Parchment Invitation Envelopes, 4.75 x 6.5, Blue Recycled, 25/Pack (10296)~#|#~m003904489_sc7JAM Paper A6 Parchment Invitation Envelopes, 4.75 x 6.5, Blue Recycled, 25/Pack (10296)~#|#~m003904488_sc7
JAM Paper A6 Parchment Invitation Envelopes, 4.75 x 6.5, Blue Recycled, 25/Pack (10296) is Out of stock
Item: 263944
Model: 10296
No reviews yet
Price is $10.89
Unit of measure 25/Pack
LUX 5.5" x 8.5" Kraft Open End - 24lb. Brown Kraft 50/Pack, 24lb. Brown Kraft (WS-4584-50)~#|#~B448E156-2AB9-42D4-B27E023CED6F0F50_sc7LUX 5.5" x 8.5" Kraft Open End - 24lb. Brown Kraft 50/Pack, 24lb. Brown Kraft (WS-4584-50)~#|#~80C58C37-45E6-467E-A9AF313EC314AE4A_sc7
LUX 5.5" x 8.5" Kraft Open End - 24lb. Brown Kraft 50/Pack, 24lb. Brown Kraft (WS-4584-50) is Out of stock
Item: 23995479
Model: WS-4584-50
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Price is $19.19
Unit of measure 50/Pack
JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, 100/Pack (4231B)~#|#~sp121511878_sc7JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, 100/Pack (4231B)~#|#~sp121511876_sc7
JAM Paper 8.5 x 8.5 Square Invitation Envelopes, White, 100/Pack (4231B) is Out of stock
Item: 261326
Model: 4231B
Price is $57.49
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.