LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Wisteria (LUX-4865-106-50)~#|#~m000081748_sc7
Item: 282412
Model: LUX-4865-106-50
No reviews yet
Price is $14.29
Unit of measure 50/Pack
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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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 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 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 Thu, May 07
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LUX Open End Envelopes 9" x 12", Navy Blue~#|#~m001406668_sc7
Item: 1277799
Model: LUX-1590-103-1M
No reviews yet
Price is $355.39
Unit of measure 1000/Box
Free delivery by Thu, May 07
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Bronze Metallic, 250/BX~#|#~m004940419_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Bronze Metallic, 250/BX~#|#~m005823903_sc7
Item: 384997
Model: 5360-12-250
No reviews yet
Price is $87.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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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 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 Self Seal Invitation Envelopes,  5 1/4" x 5 1/4", Midnight Black, 250/Pack (LUX-8510-B-250)~#|#~sp225303103_sc7JAM Paper Self Seal Invitation Envelopes,  5 1/4" x 5 1/4", Midnight Black, 250/Pack (LUX-8510-B-250)~#|#~sp225303102_sc7
Item: 24578536
Model: LUX-8510-B-250
No reviews yet
Price is $38.09
Unit of measure 250/Pack
Free delivery by Tue, May 05
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JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Leaf Green, 25/Pack (PACV853)~#|#~m000068067_sc7
Item: 262180
Model: PACV853
Price is $37.29
Unit of measure 25/Pack
Free delivery by Tue, May 05
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JAM Paper Booklet Envelopes, 9" x 12", Navy Blue, 500/Box (263916011d)~#|#~sp121512566_sc7JAM Paper Booklet Envelopes, 9" x 12", Navy Blue, 500/Box (263916011d)~#|#~sp121512565_sc7
Item: 2478159
Model: 263916011D
No reviews yet
Price is $327.99
Unit of measure 500/Box
Free delivery by Tue, May 05
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LUX 5 1/2 x 5 1/2 Square 50/Pack, Vintage Plum (LUX-8515-104-50)~#|#~sp14807774_sc7
Item: 24261372
Model: LUX-8515-104-50
No reviews yet
Price is $20.89
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Silver Metallic (5375-06-50)~#|#~m000081736_sc7
Item: 282660
Model: 5375-06-50
No reviews yet
Price is $20.49
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 8.5 x 8.5 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (V018318)~#|#~m004672495_sc7JAM Paper 8.5 x 8.5 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (V018318)~#|#~m004672494_sc7
Item: 261998
Model: V018318
No reviews yet
Price is $49.99
Unit of measure 25/Pack
Free delivery by Tue, May 05
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LUX 5 x 5 Square Envelopes, 500/Box, Vintage Plum (LUX-8505-104500)~#|#~m000081534_sc7
Item: 516867
Model: LUX-8505-104500
No reviews yet
Price is $76.79
Free delivery by Thu, May 07
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JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Silver, 50/Pack (V018243I)~#|#~m004672478_sc7JAM Paper 4Bar A1 Metallic Invitation Envelopes, 3.625 x 5.125, Stardream Silver, 50/Pack (V018243I)~#|#~m004672477_sc7
Item: 1588627
Model: V018243I
Price is $39.99
Unit of measure 50/Pack
Free delivery by Tue, May 05
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LUX 7 1/2 x 7 1/2 Square Envelopes, 50/Box, Garnet (EX8555-26-50)~#|#~m000081630_sc7
Item: 282277
Model: EX8555-26-50
Price is $31.09
Unit of measure 50/Pack
Delivery by Thu, May 07
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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 $21.99
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 7.5 x 7.5 Square Invitation Envelopes, Chocolate Brown Recycled, 25/Pack (227912749)~#|#~sp4808464_sc7JAM Paper 7.5 x 7.5 Square Invitation Envelopes, Chocolate Brown Recycled, 25/Pack (227912749)~#|#~sp4808463_sc7
Item: 2632985
Model: 227912749
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Tue, May 05
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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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LUX 9 x 12 Booklet Envelopes 50/Pack, Blush (LUX-4899-39-50)~#|#~sp5822112_sc7LUX 9 x 12 Booklet Envelopes 50/Pack, Blush (LUX-4899-39-50)~#|#~sp5873984_sc7
Item: 23996090
Model: LUX-4899-39-50
No reviews yet
Price is $26.99
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, Bulk 250/Box (1592157H)~#|#~m006948424_sc7JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, Bulk 250/Box (1592157H)~#|#~m006948423_sc7
Item: 1589678
Model: 1592157H
No reviews yet
Price is $314.99
Unit of measure 250/Box
Free delivery by Tue, May 05
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JAM Paper 5 x 6.125 Booklet Foil Envelopes with Self-Adhesive Closure, Blue with White Snowflakes, 100/Pack (01336166B)~#|#~m000141501_sc7
Item: 362915
Model: 01336166B
No reviews yet
Price is $108.99
Unit of measure 100/Pack
Free delivery by Tue, May 05
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LUX A6 Foil Lined Invitation Envelopes (4 3/4 x 6 1/2) 250/Box, White w/Black LUX Lining (FLWH4875-02-250)~#|#~m000081966_sc7
Item: 387920
Model: FLWH4875-02-250
No reviews yet
Price is $61.29
Unit of measure 250/Box
Free delivery by Thu, May 07
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JAM Paper 9 x 9 Square Invitation Envelopes, White, Bulk 1000/Carton (4232C)~#|#~sp115352016_sc7JAM Paper 9 x 9 Square Invitation Envelopes, White, Bulk 1000/Carton (4232C)~#|#~sp115352015_sc7
Item: 261347
Model: 4232C
Price is $313.59
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, Taupe Metallic (5380-M09-1M)~#|#~m005902320_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Taupe Metallic (5380-M09-1M)~#|#~m005823888_sc7
Item: 2146113
Model: 5380-M09-1M
No reviews yet
Price is $288.09
Unit of measure 1000/Pack
Free delivery by Thu, May 07
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LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 1000/Box, Black w/Silver LUX Lining (FLBK4872-031000)~#|#~m004940477_sc7LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 1000/Box, Black w/Silver LUX Lining (FLBK4872-031000)~#|#~m005823919_sc7
Item: 517286
Model: FLBK4872-031000
No reviews yet
Price is $344.79
Free delivery by Thu, May 07
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JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, Bulk 250/Box (2792291H)~#|#~m002934107_sc7JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, Bulk 250/Box (2792291H)~#|#~m002934106_sc7
Item: 1589722
Model: 2792291H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Tue, May 05
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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 Tue, May 05
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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 $182.59
Unit of measure 500/Box
Free delivery by Thu, May 07
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 8.625 x 8.625, Clear, 1000/Carton (8.62X8.62CELLOB)~#|#~m000068414_sc7
Item: 262944
Model: 8.62X8.62CELLOB
No reviews yet
Price is $416.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 8.4375 x 10.25, Clear, 100/Pack (8X10CELLOB)~#|#~m003548833_sc7
Item: 262948
Model: 8X10CELLOB
No reviews yet
Price is $520.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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JAM Paper 9 x 12 Metallic Booklet Envelopes, Stardream Silver, Bulk 500/Box (85818d)~#|#~sp4211590_sc7
Item: 2477990
Model: 85818D
No reviews yet
Price is $939.99
Unit of measure 500/Box
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, Smoke w/Silver LUX Lining (FLSM4880-03-50)~#|#~m000082081_sc7
Item: 282828
Model: FLSM4880-03-50
Price is $27.95
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, 25/Pack (V01210)~#|#~m003905211_sc7JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, 25/Pack (V01210)~#|#~m003905210_sc7
Item: 261575
Model: V01210
No reviews yet
Price is $29.89
Unit of measure 25/Pack
Delivery by Tue, May 05
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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 $98.29
Free delivery by Thu, May 07
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JAM Paper Invitation Envelope 6 1/2" x 6 1/2", Tan Beige, 100/Pack (227914986d)~#|#~EDE89164-2574-4E00-863FC4257F6855AC_sc7JAM Paper Invitation Envelope 6 1/2" x 6 1/2", Tan Beige, 100/Pack (227914986d)~#|#~08EC89E4-EC0C-4871-A96FE251206B2FE1_sc7
Item: 24604559
Model: 227914986d
No reviews yet
Price is $64.99
Unit of measure 100/Pack
Free delivery by Tue, May 05
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Over 30
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.