LUX 5 1/2 x 5 1/2 Square Envelopes, 250/Box, Sunflower (EX8515-12-250)~#|#~m000081501_sc7
Item: 387033
Model: EX8515-12-250
No reviews yet
Price is $91.19
Unit of measure 250/Box
Free delivery by Mon, May 11
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JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, Bulk 1000/Carton (900905922B)~#|#~m004672038_sc7JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, Bulk 1000/Carton (900905922B)~#|#~m004672037_sc7
Item: 262070
Model: 900905922B
No reviews yet
Price is $677.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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80 lb 6 1/4" x 6 1/4" Peel & Press Square Envelopes, Midnight Black, 50/Pack~#|#~m001149685_sc7
Item: 1030064
Model: LUX-8530-B-50
No reviews yet
Price is $21.99
Delivery by Mon, May 11
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LUX 9" x 9" Square Envelopes, Ruby Red, 500/PK (LUX-8585-18-500)~#|#~m003307877_sc7
Item: 1985005
Model: LUX-8585-18-500
No reviews yet
Price is $179.29
Unit of measure 500/Box
Free delivery by Mon, May 11
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JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Gold, 50/Pack (PACV867I)~#|#~m003905199_sc7JAM Paper A10 Translucent Vellum Invitation Envelopes, 6 x 9.5, Gold, 50/Pack (PACV867I)~#|#~m003905198_sc7
Item: 1588880
Model: PACV867I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX A2 (4 3/8 x 5 3/4) 1000/Box, Copper Metallic (5370-11-1000)~#|#~m000081698_sc7
Item: 385154
Model: 5370-11-1000
No reviews yet
Price is $177.09
Unit of measure 1000/Box
Free delivery by Mon, May 11
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Quality Park Gummed Catalog Envelope, 6 1/2" x 9 1/2", Kraft, 500/Box (QUA40865)~#|#~s0171306_sc7
Item: QUA40865
Model: QUA40865
Price is $82.39
Unit of measure Box
Free delivery by Mon, May 04
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LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Natural w/Black LUX Lining (FLNT4872-02-50)~#|#~m004940480_sc7LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Natural w/Black LUX Lining (FLNT4872-02-50)~#|#~m005823920_sc7
Item: 282553
Model: FLNT4872-02-50
No reviews yet
Price is $20.59
Unit of measure 50/Pack
Delivery by Mon, May 11
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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 Thu, May 07
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LUX 7 x 7 Square Envelopes, 50/Box, Gold Metallic (8545-07-50)~#|#~m003307879_sc7
Item: 1985258
Model: 8545-07-50
No reviews yet
Price is $34.29
Unit of measure 50/Box
Delivery by Mon, May 11
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes W/Glue, Smoke Gray, 250/BX~#|#~m000081283_sc7
Item: 386958
Model: EX7716-22-250
No reviews yet
Price is $118.89
Unit of measure 250/Box
Free delivery by Mon, May 11
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Blue, 50/Pack (PACV517I)~#|#~m003905176_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Blue, 50/Pack (PACV517I)~#|#~m003905175_sc7
Item: 1588376
Model: PACV517I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Baby Blue (EX4865-13-500)~#|#~m000081687_sc7
Item: 514526
Model: EX4865-13-500
No reviews yet
Price is $98.29
Free delivery by Mon, May 11
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Silver Foil, Bulk 250/Box (3243671H)~#|#~m004671937_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Silver Foil, Bulk 250/Box (3243671H)~#|#~m004671936_sc7
Item: 1589684
Model: 3243671H
No reviews yet
Price is $89.99
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) 500/Box, Vintage Plum (LUX-4880-104500)~#|#~m005902345_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Vintage Plum (LUX-4880-104500)~#|#~m005823979_sc7
Item: 517473
Model: LUX-4880-104500
No reviews yet
Price is $202.49
Free delivery by Mon, May 11
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Over 30
JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Copper, Bulk 1000/Carton (V018251B)~#|#~m003905245_sc7JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Copper, Bulk 1000/Carton (V018251B)~#|#~m003905244_sc7
Item: 262029
Model: V018251B
No reviews yet
Price is $677.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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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 Thu, May 07
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Over 30
LUX 5 1/4 x 5 1/4 Square Envelopes 50/Pack, Grocery Bag (8510-GB-50)~#|#~sp14807955_sc7
Item: 24261013
Model: 8510-GB-50
No reviews yet
Price is $17.49
Unit of measure 50/Pack
Delivery by Mon, May 11
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Citrus (FE4280-20-500)~#|#~m005902340_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Citrus (FE4280-20-500)~#|#~m005823944_sc7
Item: 513980
Model: FE4280-20-500
No reviews yet
Price is $116.69
Free delivery by Mon, May 11
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JAM Paper 6 x 6 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792267I)~#|#~m003904795_sc7JAM Paper 6 x 6 Square Colored Invitation Envelopes, Green Recycled, 50/Pack (2792267I)~#|#~m003904794_sc7
Item: 1588518
Model: 2792267I
No reviews yet
Price is $49.99
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, Seafoam (LUX-8535-113250)~#|#~m000081498_sc7
Item: 516900
Model: LUX-8535-113250
No reviews yet
Price is $107.49
Free delivery by Mon, May 11
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JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Primary Red, 25/Pack (1592165)~#|#~m002934321_sc7JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Primary Red, 25/Pack (1592165)~#|#~m002934320_sc7
Item: 262245
Model: 1592165
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Thu, May 07
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JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Green Recycled, 25/Pack (2792295)~#|#~m003904799_sc7JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Green Recycled, 25/Pack (2792295)~#|#~m003904798_sc7
Item: 261277
Model: 2792295
No reviews yet
Price is $25.99
Unit of measure 25/Pack
Delivery by Thu, May 07
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Mandarin (EX8535-11-50)~#|#~m000081577_sc7
Item: 282215
Model: EX8535-11-50
No reviews yet
Price is $28.99
Unit of measure 50/Pack
Delivery by Mon, May 11
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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 $43.69
Unit of measure 50/Pack
Free delivery by Mon, May 11
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Yellow, 25/Pack (PACV516)~#|#~m003905178_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Yellow, 25/Pack (PACV516)~#|#~m003905177_sc7
Item: 262277
Model: PACV516
No reviews yet
Price is $38.99
Unit of measure 25/Pack
Free delivery by Thu, May 07
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Wasabi (FE4280-22-250)~#|#~m005902341_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 250/Box, Wasabi (FE4280-22-250)~#|#~m005823981_sc7
Item: 387850
Model: FE4280-22-250
No reviews yet
Price is $66.79
Unit of measure 250/Box
Free delivery by Mon, May 11
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Over 30
JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, Bulk 1000/Carton (28417C)~#|#~m007049353_sc7JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, Bulk 1000/Carton (28417C)~#|#~m007049352_sc7
Item: 261342
Model: 28417C
No reviews yet
Price is $244.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Black Linen, Bulk 250/Box (V01205H)~#|#~m003905207_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Black Linen, Bulk 250/Box (V01205H)~#|#~m003905206_sc7
Item: 1590173
Model: V01205H
No reviews yet
Price is $94.89
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX 9 x 9 Square Envelopes, 50/Box, Ruby Red (LUX-8585-18-50)~#|#~m003307877_sc7
Item: 1985306
Model: LUX-8585-18-50
No reviews yet
Price is $35.79
Unit of measure 50/Box
Free delivery by Mon, May 11
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80 lb 6 1/4" x 6 1/4" Peel & Press Square Linen Envelopes, Black, 50/Pack~#|#~m001149685_sc7
Item: 1030051
Model: 8530-BLI-50
Price is $21.69
Delivery by Mon, May 11
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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 Thu, May 07
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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Navy Blue, Bulk 1000/Carton (LEBA667B)~#|#~m003905156_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Navy Blue, Bulk 1000/Carton (LEBA667B)~#|#~m003905155_sc7
Item: 261722
Model: LEBA667B
No reviews yet
Price is $317.59
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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Over 30
LUX 5 1/4" x 7 1/4" A7 Invitation Envelopes W/Peel & Press, Vintage Plum Purple, 250/BX~#|#~m005902345_sc7LUX 5 1/4" x 7 1/4" A7 Invitation Envelopes W/Peel & Press, Vintage Plum Purple, 250/BX~#|#~m005823979_sc7
Item: 388659
Model: LUX-4880-104-25
No reviews yet
Price is $55.59
Unit of measure 250/Box
Free delivery by Mon, May 11
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Over 30
JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Primary Blue, 50/Pack (PACV607I)~#|#~m003904762_sc7JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Primary Blue, 50/Pack (PACV607I)~#|#~m003905184_sc7
Item: 1588963
Model: PACV607I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Thu, May 07
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Over 30
LUX 9 x 9 Square Envelopes, 500/Box, Clear Translucent (8585-50-500)~#|#~m000081665_sc7
Item: 514713
Model: 8585-50-500
No reviews yet
Price is $401.69
Free delivery by Mon, May 11
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Over 30
LUX Open End Window Envelopes 9" x 12"; Navy Blue~#|#~m001406668_sc7
Item: 1277781
Model: LUX1590103-500
No reviews yet
Price is $184.09
Unit of measure 500/Box
Free delivery by Mon, May 11
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Magenta (EX8515-10-50)~#|#~m000081487_sc7
Item: 282118
Model: EX8515-10-50
No reviews yet
Price is $21.99
Unit of measure 50/Pack
Delivery by Mon, May 11
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LUX A2 (4 3/8 x 5 3/4) 1000/Box, Natural Linen (4870-NLI-1000)~#|#~m000161363_sc7
Item: 384700
Model: 4870-NLI-1000
No reviews yet
Price is $150.09
Unit of measure 1000/Box
Free delivery by Mon, May 11
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JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Lime Green, 12/Pack (218B1LI)~#|#~m004858019_sc7JAM Paper® Plastic Envelopes with Button and String Tie Closure, Letter Booklet, 9.75 x 13, Lime Green, 12/Pack (218B1LI)~#|#~m004857853_sc7
Item: 263056
Model: 218B1LI
Price is $33.69
Unit of measure 12/Pack Price per unit $2.81/Envelope
Delivery by Thu, May 07
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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.