Sponsored Products
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Malachite Deep Green, 25/Pack (GCST703)~#|#~m000068030_sc7
Item: 262009
Model: GCST703
No reviews yet
Price is $28.39
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper 5 x 5 Square Translucent Vellum Invitation Envelopes, Clear, Bulk 250/Box (31032H)~#|#~m006965543_sc7JAM Paper 5 x 5 Square Translucent Vellum Invitation Envelopes, Clear, Bulk 250/Box (31032H)~#|#~m006965542_sc7
Item: 1589815
Model: 31032H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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Lux Full Face Window Envelopes, Wasabi 4.12 x 9.5 inch 500/Pack~#|#~m002084637_sc7
Item: 1559273
Model: FFW-10-L22-500
No reviews yet
Price is $136.27
Free delivery by Wed, Feb 18
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JAM Paper 9 x 12 Booklet Envelopes, Black, 100/Pack (2112755c)~#|#~sp121512562_sc7JAM Paper 9 x 12 Booklet Envelopes, Black, 100/Pack (2112755c)~#|#~sp121512561_sc7
Item: 2478152
Model: 2112755C
No reviews yet
Price is $104.49
Unit of measure 100/Pack
Free delivery by Mon, Feb 16
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JAM Paper 8.5 x 8.5 Square Strathmore Invitation Envelopes, Ivory Wove, 25/Pack (191284)~#|#~sp137086032_sc7
Item: 262566
Model: 191284
Price is $32.19
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper 6.125 x 9.5 Booklet Foil Envelopes with  Peel & Seal Closure, Black, 100/Pack (01323282B)~#|#~sp137085714_sc7
Item: 260959
Model: 01323282B
No reviews yet
Price is $127.99
Unit of measure 100/Box
Free delivery by Mon, Feb 16
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LUX 9 x 12 Open End Envelopes 250/Pack, Midnight Black (80428-250)~#|#~sp14807538_sc7
Item: 24261169
Model: 80428-250
No reviews yet
Price is $154.79
Unit of measure 250/Pack
Free delivery by Wed, Feb 18
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LUX #1 Coin Envelopes (2 1/4 x 3 1/2) 250/Box, Teal (LUX-1CO-25-250)~#|#~m001149689_sc7
Item: 1029940
Model: LUX-1CO-25-250
No reviews yet
Price is $101.39
Free delivery by Wed, Feb 18
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Primary Blue, Bulk 250/Box (PACV527H)~#|#~m006965545_sc7JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Primary Blue, Bulk 250/Box (PACV527H)~#|#~m006965544_sc7
Item: 1589793
Model: PACV527H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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LUX 6 x 6 Square Envelopes 250/Pack, Citrus (8525-20-250)~#|#~sp14807811_sc7
Item: 24260403
Model: 8525-20-250
No reviews yet
Price is $25.79
Unit of measure 250/Pack
Delivery by Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) 250/Box, Midnight Black (F-4570-B-250)~#|#~m000081720_sc7
Item: 387502
Model: F-4570-B-250
No reviews yet
Price is $73.29
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 25/Pack (900840420)~#|#~m006965529_sc7JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 25/Pack (900840420)~#|#~m006965528_sc7
Item: 262138
Model: 900840420
No reviews yet
Price is $38.49
Unit of measure 25/Pack
Free delivery by Mon, Feb 16
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LUX A8 Foil Lined Invitation Envelopes (5 1/2 x 8 1/8) 50/Box, White w/Silver LUX Lining (FLWH4885-03-50)~#|#~m000082136_sc7
Item: 282891
Model: FLWH4885-03-50
Price is $46.49
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX Slimline Invitation Envelopes (3 7/8 x 8 7/8) 250/Box, 70lb. Natural (72973-01-250)~#|#~m001149708_sc7
Item: 1028603
Model: 72973-01-250
No reviews yet
Price is $51.69
Free delivery by Wed, Feb 18
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LUX W-2 / 1099 Envelopes (5 3/4 x 8) 1000/Pack, White (7489-W2-1000)~#|#~sp5822112_sc7LUX W-2 / 1099 Envelopes (5 3/4 x 8) 1000/Pack, White (7489-W2-1000)~#|#~sp5875302_sc7
Item: 23995922
Model: 7489-W2-1000
No reviews yet
Price is $261.29
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, 50/Box, Baby Blue (EX8535-13-50)~#|#~m000081552_sc7
Item: 282186
Model: EX8535-13-50
No reviews yet
Price is $25.49
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Red Recycled, Bulk 250/Box(2794374H)~#|#~m002934119_sc7JAM Paper 8.5 x 8.5 Square Colored Invitation Envelopes, Red Recycled, Bulk 250/Box(2794374H)~#|#~m002934118_sc7
Item: 1589850
Model: 2794374H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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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 Wed, Feb 18
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JAM Paper 8.5 x 8.5 Square Metallic Invitation Envelopes, Stardream Gold, 50/Pack (V018319I)~#|#~m003905261_sc7JAM Paper 8.5 x 8.5 Square Metallic Invitation Envelopes, Stardream Gold, 50/Pack (V018319I)~#|#~m003905260_sc7
Item: 1589079
Model: V018319I
No reviews yet
Price is $96.99
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, Bulk 1000/Carton (900958831B)~#|#~m007159228_sc7JAM Paper 6 x 6 Square Strathmore Invitation Envelopes, Bright White Wove, Bulk 1000/Carton (900958831B)~#|#~m007159227_sc7
Item: 262637
Model: 900958831B
No reviews yet
Price is $564.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Heavy Metal, 25/Pack (1592109)~#|#~sp137086024_sc7
Item: 263780
Model: 1592109
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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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 Mon, Feb 16
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LUX 8 1/2 x 8 1/2 Square Envelopes 50/Pack, Midnight Black (F-8575-B-50)~#|#~sp14807612_sc7
Item: 24260713
Model: F-8575-B-50
No reviews yet
Price is $35.09
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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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 Mon, Feb 16
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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 $76.49
Unit of measure 500/Box
Free delivery by Wed, Feb 18
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JAM Paper 6 x 6 Square Foil Plastic Invitation Envelopes with Zip Closure, Clear, 100/Pack (30066G4901B)~#|#~m004672193_sc7JAM Paper 6 x 6 Square Foil Plastic Invitation Envelopes with Zip Closure, Clear, 100/Pack (30066G4901B)~#|#~m004672192_sc7
Item: 1227793
Model: 30066G4901B
No reviews yet
Price is $108.99
Unit of measure 100/Pack
Free delivery by Mon, Feb 16
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JAM Paper Square Envelopes, Peel & Press, 3 1/4 x 3 1/4, Sunflower Yellow, 50 Pack (8503-84-50)~#|#~sp228873501_sc7
Item: 24578415
Model: 8503-84-50
No reviews yet
Price is $16.29
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper Kraft A7 Invitation Envelopes, 5.25 x 7.25, Brown Kraft Paper Bag, Bulk 250/Box (LEKR700H)~#|#~m004672451_sc7JAM Paper Kraft A7 Invitation Envelopes, 5.25 x 7.25, Brown Kraft Paper Bag, Bulk 250/Box (LEKR700H)~#|#~m004672450_sc7
Item: 1590174
Model: LEKR700H
No reviews yet
Price is $89.49
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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LUX 5 x 5 Square Envelopes, 1000/Box, Natural Linen (8505-NLI-1000)~#|#~m000081492_sc7
Item: 514863
Model: 8505-NLI-1000
No reviews yet
Price is $200.61
Free delivery by Wed, Feb 18
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JAM Paper #11 Policy Business Envelopes, 4.5 x 10.375, White, Bulk 1000/Carton (01623187B)~#|#~m000141629_sc7
Item: 366740
Model: 01623187B
No reviews yet
Price is $317.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01210H)~#|#~m003905211_sc7JAM Paper 5.5 x 5.5 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01210H)~#|#~m003905210_sc7
Item: 1589755
Model: V01210H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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LUX 6 1/2 x 6 1/2 Square Envelopes, 500/Box, Baby Blue (EX8535-13-500)~#|#~m000081552_sc7
Item: 514181
Model: EX8535-13-500
No reviews yet
Price is $175.82
Free delivery by Wed, Feb 18
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Grey, 50/Pack (36396434I)~#|#~sp132864443_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Dark Grey, 50/Pack (36396434I)~#|#~sp132864442_sc7
Item: 1589163
Model: 36396434I
No reviews yet
Price is $18.99
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, Azalea Metallic (5365-24-250)~#|#~m000081686_sc7
Item: 385121
Model: 5365-24-250
No reviews yet
Price is $91.89
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper A10 Metallic Invitation Envelopes, 6 x 9.5, Stardream Silver, Bulk 1000/Carton (SD5390 06B)~#|#~m004672469_sc7JAM Paper A10 Metallic Invitation Envelopes, 6 x 9.5, Stardream Silver, Bulk 1000/Carton (SD5390 06B)~#|#~m004672468_sc7
Item: 262067
Model: SD5390 06B
No reviews yet
Price is $1,015.99
Unit of measure 1000/Carton
Free delivery by Mon, Feb 16
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LUX Open End Moistenable Glue #13 Catalog Envelope, 10" x 13", Red, 500/Box (FE-7300-15-500)~#|#~m000081429_sc7
Item: 387817
Model: FE-7300-15-500
Price is $355.99
Unit of measure 500/Box
Free delivery by Wed, Feb 18
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 500/Box, Seafoam (LUX-4872-113500)~#|#~m000081873_sc7
Item: 517556
Model: LUX-4872-113500
No reviews yet
Price is $96.19
Free delivery by Wed, Feb 18
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Blue, Bulk 250/Box (PACV517H)~#|#~m003905176_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Blue, Bulk 250/Box (PACV517H)~#|#~m003905175_sc7
Item: 1589794
Model: PACV517H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Mon, Feb 16
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Grey, 25/Pack (36396432)~#|#~m004671966_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Grey, 25/Pack (36396432)~#|#~m004671965_sc7
Item: 261449
Model: 36396432
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, Dark Grey, 25/Pack (36396431)~#|#~m004671964_sc7JAM Paper 4Bar A1 Invitation Envelopes, 3.625 x 5.125, Dark Grey, 25/Pack (36396431)~#|#~m004671963_sc7
Item: 261448
Model: 36396431
Price is $9.99
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.