LUX 5 1/2 x 5 1/2 Square Envelopes, 500/Box, Seafoam (LUX-8515-113500)~#|#~m000081498_sc7
Item: 516895
Model: LUX-8515-113500
No reviews yet
Price is $153.69
Free delivery by Fri, May 08
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LUX Square Envelopes, 9" x 9", Silver Metallic, 1,000 Envelopes (8565-06-1M)~#|#~m003307876_sc7
Item: 1985038
Model: 8585-06-1M
No reviews yet
Price is $335.09
Unit of measure 1000/Box
Free delivery by Fri, May 08
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JAM Paper 4Bar A1 Translucent Vellum Envelopes, 3.625 x 5.125, Platinum Silver, Bulk 250/Box (1591590H)~#|#~m004671927_sc7JAM Paper 4Bar A1 Translucent Vellum Envelopes, 3.625 x 5.125, Platinum Silver, Bulk 250/Box (1591590H)~#|#~m004671926_sc7
Item: 1589350
Model: 1591590H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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JAM Paper 8.5 x 8.5 Kraft Square Invitation Envelopes, Brown Kraft Paper Bag, 50/Pack (LEKR505I)~#|#~sp137085987_sc7
Item: 1588421
Model: LEKR505I
No reviews yet
Price is $63.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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Quality Park Gummed Open-End Catalog Envelopes, 6" x 9", Brown, 100/Bx~#|#~s0131262_sc7Quality Park Gummed Open-End Catalog Envelopes, 6" x 9", Brown, 100/Bx~#|#~s0375283_sc7
Item: QUA40767
Model: QUA40767
No reviews yet
Price is $21.99
Unit of measure Box
Delivery by Mon, May 04
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70 lb 6 1/4" x 6 1/4" Peel & Press Square Envelopes, Natural, 250/Box~#|#~m001149703_sc7
Item: 1028574
Model: 8530-01-250
No reviews yet
Price is $119.39
Free delivery by Fri, May 08
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JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Malachite Deep Green, 50/Pack (V018258I)~#|#~m002169105_sc7
Item: 1589056
Model: V018258I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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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 Wed, May 06
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Gray, 1000/Pack (WS-7615-1000)~#|#~7D7A3F7F-CDA5-4C1E-BE3B24F591F5D5BC_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Pastel Gray, 1000/Pack (WS-7615-1000)~#|#~2C4461BC-03DD-40A8-BDB4674714805DB3_sc7
Item: 23996531
Model: WS-7615-1000
No reviews yet
Price is $125.79
Unit of measure 1000/Pack
Free delivery by Fri, May 08
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70 lb 4" x 4" Peel & Press Square Envelopes, Natural, 500/Box~#|#~m001149705_sc7
Item: 1029951
Model: 8504-01-500
No reviews yet
Price is $99.79
Free delivery by Fri, May 08
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Cream, 50/Pack (WS-7609-50)~#|#~0CF562E5-3A71-43B2-966AED5B3EB63FD6_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Cream, 50/Pack (WS-7609-50)~#|#~9E3199C3-56AF-4542-85843A8955C2BBC9_sc7
Item: 23996871
Model: WS-7609-50
No reviews yet
Price is $16.19
Unit of measure 50/Pack
Delivery by Fri, May 08
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 1000/Pack, Blush (4872-114B-1000)~#|#~sp5822112_sc7LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 1000/Pack, Blush (4872-114B-1000)~#|#~sp5874352_sc7
Item: 23996750
Model: 4872-114B-1000
No reviews yet
Price is $160.69
Unit of measure 1000/Pack
Free delivery by Fri, May 08
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Quality Park Self Seal Catalog Envelopes, 9"L x 12"H, Kraft, 25/Box (QUA93334)~#|#~sp44343614_sc7Quality Park Self Seal Catalog Envelopes, 9"L x 12"H, Kraft, 25/Box (QUA93334)~#|#~sp44343613_sc7
Item: QUA93334
Model: QUA93334
Price is $61.39
Unit of measure Pack
Free delivery by Mon, May 04
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JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Green, Bulk 250/Box (1512744c)~#|#~m006948615_sc7JAM Paper A2 Invitation Envelopes, 4.375 x 5.75, Dark Green, Bulk 250/Box (1512744c)~#|#~m006948614_sc7
Item: 2478064
Model: 1512744C
No reviews yet
Price is $82.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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LUX 6 x 6 Square Envelopes 50/Pack, Grocery Bag (8525-GB-50)~#|#~sp14807618_sc7
Item: 24260960
Model: 8525-GB-50
No reviews yet
Price is $19.59
Unit of measure 50/Pack
Delivery by Fri, May 08
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JAM Paper #10 Business Foil Envelopes with Self-Adhesive Closure, 4.125 x 9.5, Red, 25/Pack (1323307)~#|#~m000067476_sc7
Item: 260897
Model: 1323307
No reviews yet
Price is $41.89
Unit of measure 25/Pack
Free delivery by Wed, May 06
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 250/Box, Bronze Metallic (5365-12-250)~#|#~m000081692_sc7
Item: 385085
Model: 5365-12-250
No reviews yet
Price is $65.29
Unit of measure 250/Box
Free delivery by Fri, May 08
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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 Fri, May 08
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JAM Paper 9 x 9 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01215H)~#|#~m003905219_sc7JAM Paper 9 x 9 Square Invitation Envelopes, Black Linen, Bulk 250/Box (V01215H)~#|#~m003905218_sc7
Item: 1589750
Model: V01215H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Vintage Plum (LUX-4865-104-50)~#|#~m000081744_sc7
Item: 282408
Model: LUX-4865-104-50
No reviews yet
Price is $13.95
Unit of measure 50/Pack
Delivery by Fri, May 08
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JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Ocean Blue, 25/Pack (PACV532)~#|#~m000068157_sc7
Item: 262310
Model: PACV532
No reviews yet
Price is $38.49
Unit of measure 25/Pack
Free delivery by Wed, May 06
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Quality Park Gummed #11 Inter-Departmental Envelope, 4 1/2" x 10 3/8", Brown, 500/Box (63262)~#|#~s0171439_sc7Quality Park Gummed #11 Inter-Departmental Envelope, 4 1/2" x 10 3/8", Brown, 500/Box (63262)~#|#~s0375267_sc7
Item: QUA63262
Model: QUA63262
Price is $150.29
Unit of measure 500/Box
Free Next-Day eligible by tomorrow
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JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Jupiter Red, Bulk 250/Box (V018263H)~#|#~m002934283_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Jupiter Red, Bulk 250/Box (V018263H)~#|#~m002934282_sc7
Item: 1589002
Model: V018263H
No reviews yet
Price is $215.09
Unit of measure 250/Box
Free delivery by Wed, May 06
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Primary Yellow, Bulk 250/Box (PACV526H)~#|#~m003905178_sc7JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Primary Yellow, Bulk 250/Box (PACV526H)~#|#~m003905177_sc7
Item: 1589732
Model: PACV526H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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70 lb 4" x 4" Peel & Press Square Envelopes, Natural, 250/Box~#|#~m001149705_sc7
Item: 1028595
Model: 8504-01-250
No reviews yet
Price is $64.79
Free delivery by Fri, May 08
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LUX 6 x 6 Square Envelopes 250/Pack, 70lb. Bright White (10910-250)~#|#~sp14807880_sc7
Item: 24261053
Model: 10910-250
No reviews yet
Price is $58.89
Unit of measure 250/Pack
Free delivery by Fri, May 08
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Yellow, Bulk 250/Box (PACV516H)~#|#~sp131391090_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Yellow, Bulk 250/Box (PACV516H)~#|#~sp131391089_sc7
Item: 1589733
Model: PACV516H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Violet Purple Recycled, Bulk 500/Box (356730560H)~#|#~m003757872_sc7JAM Paper #6 Coin Business Colored Envelopes, 3.375 x 6, Violet Purple Recycled, Bulk 500/Box (356730560H)~#|#~m003562852_sc7
Item: 2103379
Model: 356730560H
No reviews yet
Price is $164.79
Unit of measure 500/Box
Free delivery by Wed, May 06
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70 lb 3 1/4" x 3 1/4" Peel & Press Square Envelopes, Grocery Bag Brown, 1000/Box~#|#~m001149704_sc7
Item: 1028597
Model: 8503-GB-1000
No reviews yet
Price is $236.59
Free delivery by Fri, May 08
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JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Copper, 50/Pack (GCST651I)~#|#~m003905134_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Copper, 50/Pack (GCST651I)~#|#~m003905133_sc7
Item: 1588901
Model: GCST651I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Wed, May 06
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JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Primary Blue, Bulk 250/Box (PACV607H)~#|#~m003904762_sc7JAM Paper A2 Translucent Vellum Invitation Envelopes, 4.375 x 5.75, Primary Blue, Bulk 250/Box (PACV607H)~#|#~m003905184_sc7
Item: 1589324
Model: PACV607H
No reviews yet
Price is $189.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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LUX 9 x 12 Open End Envelopes 1000/Pack, Midnight Black (80428-1000)~#|#~sp14807538_sc7
Item: 24260247
Model: 80428-1000
No reviews yet
Price is $282.69
Unit of measure 1000/Pack
Free delivery by Fri, May 08
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LUX 3 1/4 x 3 1/4 Square Envelopes, 250/Box, Champagne Metallic (8503-M08-250)~#|#~m003307882_sc7
Item: 1985249
Model: 8503-M08-250
No reviews yet
Price is $95.89
Unit of measure 250/Box
Free delivery by Fri, May 08
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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Teal, Bulk 250/Box (157462H)~#|#~m003904714_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Teal, Bulk 250/Box (157462H)~#|#~m003904713_sc7
Item: 1590205
Model: 157462H
No reviews yet
Price is $77.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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LUX 6 1/2 x 6 1/2 Square Envelopes, 500/Box, Holiday Red (8535-15-500)~#|#~m000081572_sc7
Item: 385804
Model: 8535-15-500
No reviews yet
Price is $91.19
Unit of measure 500/Box
Free delivery by Fri, May 08
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JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, Bulk 1000/Carton (28415C)~#|#~m007049349_sc7JAM Paper 5.5 x 5.5 Square Invitation Envelopes, White, Bulk 1000/Carton (28415C)~#|#~m007049348_sc7
Item: 261338
Model: 28415C
No reviews yet
Price is $298.99
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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JAM Paper Peel & Seal Open End #13 Catalog Envelope, 10" x 13", White, 100/Pack (376634184B)~#|#~sp74203708_sc7JAM Paper Peel & Seal Open End #13 Catalog Envelope, 10" x 13", White, 100/Pack (376634184B)~#|#~sp74203800_sc7
Item: 24295232
Model: 376634184B
No reviews yet
Price is $257.29
Unit of measure 100/Pack
Free delivery by Wed, May 06
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Spring Ochre Ivory, Bulk 250/Box (PACV520H)~#|#~m006965553_sc7JAM Paper 6.5 x 6.5 Square Translucent Vellum Invitation Envelopes, Spring Ochre Ivory, Bulk 250/Box (PACV520H)~#|#~m006965552_sc7
Item: 1589789
Model: PACV520H
No reviews yet
Price is $236.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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JAM Paper 8.5 x 8.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 1000/Carton (V018319B)~#|#~m003905261_sc7JAM Paper 8.5 x 8.5 Square Metallic Invitation Envelopes, Stardream Gold, Bulk 1000/Carton (V018319B)~#|#~m003905260_sc7
Item: 262059
Model: V018319B
No reviews yet
Price is $1,352.99
Unit of measure 1000/Carton
Free delivery by Wed, May 06
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, Black Linen with Gold Foil, Bulk 250/Box (3243678H)~#|#~m002934336_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, Black Linen with Gold Foil, Bulk 250/Box (3243678H)~#|#~m002934337_sc7
Item: 1590200
Model: 3243678H
No reviews yet
Price is $127.99
Unit of measure 250/Box
Free delivery by Wed, May 06
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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.