Quality Park Gummed Catalog Envelope, 12" x 15 1/2", Light Kraft, 100/Box (41967)~#|#~s0293042_sc7Quality Park Gummed Catalog Envelope, 12" x 15 1/2", Light Kraft, 100/Box (41967)~#|#~s0171332_sc7
Item: QUA41967
Model: QUA41967
No reviews yet
Price is $46.11
Unit of measure Box
Free delivery by Fri, May 01
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LUX 7 1/2 x 7 1/2 Square Envelopes, 50/Box, Silver Metallic (8555-06-50)~#|#~m004063768_sc7
Item: 2146110
Model: 8555-06-50
No reviews yet
Price is $32.79
Unit of measure 50/Pack
Delivery by Fri, May 08
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JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Natural White Linen, Bulk 250/Box (900789414H)~#|#~m007159215_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Natural White Linen, Bulk 250/Box (900789414H)~#|#~m007159214_sc7
Item: 1590058
Model: 900789414H
No reviews yet
Price is $77.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 250/Pack, Citrus (LUX-1CO-20-250)~#|#~sp14807757_sc7
Item: 24261076
Model: LUX-1CO-20-250
No reviews yet
Price is $37.99
Unit of measure 250/Pack
Free delivery by Fri, May 08
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JAM Paper 6 x 6 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (V018307)~#|#~m004672492_sc7JAM Paper 6 x 6 Square Metallic Invitation Envelopes, Stardream Silver, 25/Pack (V018307)~#|#~m004672491_sc7
Item: 261995
Model: V018307
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Wed, May 06
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, 50/Pack (PACV514I)~#|#~m006948422_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, 50/Pack (PACV514I)~#|#~m006948421_sc7
Item: 1588458
Model: PACV514I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Amethyst Metallic (5365-17-500)~#|#~m000081682_sc7
Item: 515826
Model: 5365-17-500
No reviews yet
Price is $113.69
Free delivery by Fri, May 08
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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 Wed, May 06
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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 Wed, May 06
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Over 30
LUX 80lb 5 3/4"x8 3/4" A9 Invitation Envelopes W/Peel&Press, Vintage Plum Purple, 500/BX~#|#~m000082186_sc7
Item: 517567
Model: LUX-4895-104500
No reviews yet
Price is $130.59
Free delivery by Fri, May 08
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Over 30
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Midnight Black (F-4580-B-1000)~#|#~m005902338_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 1000/Box, Midnight Black (F-4580-B-1000)~#|#~m005823959_sc7
Item: 387518
Model: F-4580-B-1000
No reviews yet
Price is $151.69
Unit of measure 1000/Box
Free delivery by Fri, May 08
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Over 30
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 $63.49
Free delivery by Fri, May 08
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Over 30
Quality Park Gummed #1 Mini Envelopes, 2 1/4" x 3 1/2", Light Brown, 500/Box (QUA50160)~#|#~sp48117216_sc7Quality Park Gummed #1 Mini Envelopes, 2 1/4" x 3 1/2", Light Brown, 500/Box (QUA50160)~#|#~sp48117212_sc7
Item: QUA50160
Model: QUA50160
Price is $45.69
Unit of measure Box
Free delivery by Fri, May 01
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Over 30
JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Primary Yellow, Bulk 250/Box (PACV506H)~#|#~m003905174_sc7JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Primary Yellow, Bulk 250/Box (PACV506H)~#|#~m003905173_sc7
Item: 1589734
Model: PACV506H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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Over 30
LUX A7 Full Face Window Envelopes, Grocery Bag Brown, 1000/Pack (A7FFW-GB-1M)~#|#~m003307941_sc7
Item: 1984836
Model: A7FFW-GB-1M
No reviews yet
Price is $198.59
Unit of measure 1000/Box
Free delivery by Fri, May 08
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Over 30
JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, 50/Pack (2792291I)~#|#~m002934107_sc7JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, 50/Pack (2792291I)~#|#~m002934106_sc7
Item: 1588434
Model: 2792291I
No reviews yet
Price is $49.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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Over 30
80 lb 5 3/4" x 5 3/4" Peel & Press Square Linen Envelopes, White, 500/Box~#|#~m001149702_sc7
Item: 1028572
Model: 8520-WLI-500
No reviews yet
Price is $107.69
Free delivery by Fri, May 08
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Over 30
JAM Paper A10 Metallic Invitation Envelopes, 6 x 9.5, Stardream Silver, 25/Pack (SD5390 06)~#|#~m004672469_sc7JAM Paper A10 Metallic Invitation Envelopes, 6 x 9.5, Stardream Silver, 25/Pack (SD5390 06)~#|#~m004672468_sc7
Item: 261990
Model: SD5390 06
No reviews yet
Price is $35.59
Unit of measure 25/Pack
Free delivery by Wed, May 06
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Over 30
LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Smoke (EX4875-22-50)~#|#~m000081953_sc7
Item: 282663
Model: EX4875-22-50
No reviews yet
Price is $12.69
Unit of measure 50/Pack
Delivery by Fri, May 08
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Over 30
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 Wed, May 06
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Over 30
LUX A2 (4 3/8 x 5 3/4) 1000/Box, Anthracite Metallic (5370-15-1000)~#|#~m000081764_sc7
Item: 385166
Model: 5370-15-1000
No reviews yet
Price is $206.89
Unit of measure 1000/Box
Free delivery by Fri, May 08
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Over 30
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 500/Box, Vintage Plum (LUX-4872-104500)~#|#~m000081880_sc7
Item: 517539
Model: LUX-4872-104500
No reviews yet
Price is $113.69
Free delivery by Fri, May 08
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JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 1000/Carton (15864B)~#|#~sp112110499_sc7JAM Paper #10 Business Envelope, 4 1/8" x 9 1/2", Violet Purple, 1000/Carton (15864B)~#|#~sp112110498_sc7
Item: 263890
Model: 15864B
Price is $267.19
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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Over 30
LUX 5 1/2 x 5 1/2 Square Envelopes, 500/Box, Holiday Green (8515-12-500)~#|#~m000081475_sc7
Item: 385716
Model: 8515-12-500
No reviews yet
Price is $72.89
Unit of measure 500/Box
Free delivery by Fri, May 08
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LUX A7 Invitation Envelopes, 5-1/4" x 7-1/4", 250/Pack, Holiday Leaves on Ruby Red (LUX488018G250)~#|#~sp20150746_sc7
Item: 24294029
Model: LUX488018G250
Price is $51.89
Unit of measure 250/Pack
Free delivery by Fri, May 08
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Over 30
LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 1000/Box, Holiday Green (67211-1000)~#|#~m000081752_sc7
Item: 385625
Model: 67211-1000
No reviews yet
Price is $126.79
Unit of measure 1000/Box
Free delivery by Fri, May 08
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Over 30
LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, White Linen (8535-WLI-250)
Item: 385876
Model: 8535-WLI-250
No reviews yet
Price is $80.59
Unit of measure 250/Box
Free delivery by Fri, May 08
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Natural, 250/BX~#|#~m000161321_sc7
Item: 385681
Model: 7716-N-250
No reviews yet
Price is $92.89
Unit of measure 250/Box
Free delivery by Fri, May 08
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Over 30
LUX 8" x 8" Square Envelopes, Ruby Red, 500/PK (LUX-8565-18-500)~#|#~m003307875_sc7
Item: 1985049
Model: LUX-8565-18-500
No reviews yet
Price is $257.39
Unit of measure 500/Box
Free delivery by Fri, May 08
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Over 30
LUX 9 x 12 Kraft Open End Envelopes, 1000/Box, 28lb. White w/ Security Tint (WS-4894-ST-1M)~#|#~m004063773_sc7
Item: 2146102
Model: WS-4894-ST-1M
No reviews yet
Price is $336.89
Unit of measure 1000/Pack
Free delivery by Fri, May 08
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Over 30
LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, Baby Blue (EX8535-13-250)~#|#~m000081552_sc7
Item: 387322
Model: EX8535-13-250
No reviews yet
Price is $108.59
Unit of measure 250/Box
Free delivery by Fri, May 08
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Over 30
JAM Paper 6 x 6 Square Invitation Envelopes, Dark Red, 50/Pack (31511296I)~#|#~m002934224_sc7JAM Paper 6 x 6 Square Invitation Envelopes, Dark Red, 50/Pack (31511296I)~#|#~m002934223_sc7
Item: 1588467
Model: 31511296I
No reviews yet
Price is $63.59
Unit of measure 50/Pack
Free delivery by Wed, May 06
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Over 30
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Pack, Silver Metallic (4872-06-250)~#|#~sp14807603_sc7
Item: 24260749
Model: 4872-06-250
No reviews yet
Price is $65.29
Unit of measure 250/Pack
Free delivery by Fri, May 08
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Over 30
JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, 25/Pack (900905922)~#|#~m004672038_sc7JAM Paper #10 Policy Metallic Envelopes, 4.125 x 9.5, Stardream Silver, 25/Pack (900905922)~#|#~m004672037_sc7
Item: 261993
Model: 900905922
No reviews yet
Price is $27.69
Unit of measure 25/Pack
Delivery by Wed, May 06
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Over 30
LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Natural Linen (8515-NLI-50)~#|#~m000081492_sc7
Item: 282123
Model: 8515-NLI-50
No reviews yet
Price is $21.99
Unit of measure 50/Pack
Delivery by Fri, May 08
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Over 30
JAM Paper 6 x 6 Square Metallic Invitation Envelopes, Stardream Silver, Bulk 250/Box (V018307H)~#|#~m004672492_sc7JAM Paper 6 x 6 Square Metallic Invitation Envelopes, Stardream Silver, Bulk 250/Box (V018307H)~#|#~m004672491_sc7
Item: 1589821
Model: V018307H
No reviews yet
Price is $314.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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Over 30
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 500/Box, Silver Metallic (5365-06-500)~#|#~m000081736_sc7
Item: 515869
Model: 5365-06-500
No reviews yet
Price is $119.19
Free delivery by Fri, May 08
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Over 30
LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Teal (EX8515-25-50)~#|#~m000081503_sc7
Item: 282134
Model: EX8515-25-50
No reviews yet
Price is $26.09
Unit of measure 50/Pack
Delivery by Fri, May 08
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Over 30
LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Crystal Metallic, 50/Pack~#|#~m004940428_sc7LUX 4 1/8" x 9 1/2" #10 80lbs. Square Flap Envelopes, Crystal Metallic, 50/Pack~#|#~m005823906_sc7
Item: 281920
Model: 5360-30-50
No reviews yet
Price is $40.09
Unit of measure 50/Pack
Free delivery by Fri, May 08
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Over 30
LUX 5 1/2 x 5 1/2 Square Envelopes, 250/Box, Magenta (EX8515-10-250)~#|#~m000081487_sc7
Item: 387020
Model: EX8515-10-250
No reviews yet
Price is $90.79
Unit of measure 250/Box
Free delivery by Fri, May 08
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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.