Sponsored Products
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Pack, Brilliant White - 100% Cotton (4880-SBW-50)~#|#~sp14807616_sc7
Item: 24260965
Model: 4880-SBW-50
No reviews yet
Price is $28.09
Unit of measure 50/Pack
Delivery by Mon, May 19
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Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132158_sc7Quality Park Redi-Seal Security Tinted Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (QUA11218)~#|#~sp145132157_sc7
Item: 507690
Model: QUA11218
Price is $99.09
Unit of measure 500/Box
Free Next-Day eligible by tomorrow
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Copper Metallic (5380-11-50)~#|#~m000081698_sc7
Item: 282750
Model: 5380-11-50
No reviews yet
Price is $19.90
Unit of measure 50/Pack
Delivery by Mon, May 19
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LUX 9 x 12 Open End Envelopes 50/Pack, 24lb. Bright White (8193-50)~#|#~59BD81EC-0CA0-4F35-83FA263DA5BA5AB9_sc7
Item: 24260839
Model: 8193-50
No reviews yet
Price is $17.09
Unit of measure 50/Pack
Delivery by Mon, May 19
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Partners Tyvek Self Seal Expandable Envelope, 10" x 15", White, 100/Carton (TYE10152WS)~#|#~m004079052_sc7
Item: 2301089
Model: TYE10152WS
No reviews yet
Price is $302.99
Unit of measure 100/Carton
Free delivery by Thu, May 15
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Lilac (SH4275-05-50)~#|#~m000081926_sc7
Item: 282628
Model: SH4275-05-50
No reviews yet
Price is $25.39
Unit of measure 50/Pack
Delivery by Mon, May 19
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JAM Paper Tyvek Open End Clasp #13 Catalog Envelope, 10" x 13", Gold, 10/Pack (V021378B)~#|#~m003905264_sc7JAM Paper Tyvek Open End Clasp #13 Catalog Envelope, 10" x 13", Gold, 10/Pack (V021378B)~#|#~m003905263_sc7
Item: 1912870
Model: V021378B
Price is $24.19
Unit of measure 10/Pack
Delivery by Thu, May 15
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JAM Paper #10 Policy Envelope, 4 1/8" x 9 1/2", Olive, 50/Pack (125137469I)~#|#~0317A995-6346-4603-94E01FB41B4EF7F4_sc7
Item: 24557948
Model: 125137469I
No reviews yet
Price is $25.39
Unit of measure 50/Pack
Delivery by Thu, May 15
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JAM Paper A7 Invitation Envelope, 5 1/4" x 7 1/4", Red, 25/Pack (15945)~#|#~m002934113_sc7JAM Paper A7 Invitation Envelope, 5 1/4" x 7 1/4", Red, 25/Pack (15945)~#|#~m002934112_sc7
Item: 260829
Model: 15945
Price is $10.09
Unit of measure 25/Pack
Delivery by Thu, May 15
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Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Brown, 100/Box (QUA63562)~#|#~sp42179896_sc7Quality Park Kraft Button & String Inter-Departmental Envelope 10" x 13", Brown, 100/Box (QUA63562)~#|#~sp42179895_sc7
Item: 377355
Model: QUA63562
Price is $101.69
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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LUX Booklet Envelope, 6" x 9", Bright White, 50/Pack (11874-50)~#|#~sp14807410_sc7
Item: 24260523
Model: 11874-50
Price is $13.29
Unit of measure 50/Pack
Delivery by Mon, May 19
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Staples Clasp & Gummed Catalog Envelopes, 10"L x 13"H, Bright White, 100/Box (570231N)~#|#~9247A566-A840-41B3-BB64C9F71CCCAB78_sc7Staples Clasp & Gummed Catalog Envelopes, 10"L x 13"H, Bright White, 100/Box (570231N)~#|#~339090E5-6068-4E2D-84FDAAD194F32F48_sc7
Item: 570231
Model: ST570231N-CC
Price is $41.89
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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JAM Paper Kraft A7 Invitation Envelopes, 5.25 x 7.25, Brown Kraft Paper Bag, 25/Pack (LEKR700)~#|#~m004672451_sc7JAM Paper Kraft A7 Invitation Envelopes, 5.25 x 7.25, Brown Kraft Paper Bag, 25/Pack (LEKR700)~#|#~m004672450_sc7
Item: 261529
Model: LEKR700
Price is $13.89
Unit of measure 25/Pack
Delivery by Thu, May 15
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LUX #10 Full Face Window Envelopes (4 1/8 x 9 1/2) 50/Pack, 28lb. Bright White (FFW-10-50)~#|#~sp14807466_sc7
Item: 24260466
Model: FFW-10-50
No reviews yet
Price is $20.99
Unit of measure 50/Pack
Delivery by Mon, May 19
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LUX 11 1/2 x 14 1/2 Open End Envelopes 50/Pack, 28lb. Bright White (4166-50)~#|#~sp14807484_sc7
Item: 24261049
Model: 4166-50
Price is $43.99
Unit of measure 50/Pack
Free delivery by Mon, May 19
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JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Linen, 50/Pack (66670I)~#|#~sp132864423_sc7JAM Paper A2 Strathmore Invitation Envelopes, 4.375 x 5.75, Bright White Linen, 50/Pack (66670I)~#|#~sp132864422_sc7
Item: 1588956
Model: 66670I
No reviews yet
Price is $19.99
Unit of measure 50/Pack
Delivery by Thu, May 15
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Navy Blue, 25/Pack (LEBA717)~#|#~sp115351999_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Navy Blue, 25/Pack (LEBA717)~#|#~sp115351997_sc7
Item: 261700
Model: LEBA717
Price is $16.69
Unit of measure 25/Pack
Delivery by Thu, May 15
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Grocery Bag (4880-GB-50)~#|#~m005902295_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Grocery Bag (4880-GB-50)~#|#~m005823951_sc7
Item: 282771
Model: 4880-GB-50
Price is $20.39
Unit of measure 50/Pack
Delivery by Mon, May 19
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LUX Peel & Press Self Seal A9 Invitation Envelope, 5 3/4" x 8 3/4", White, 50/Pack (4895-WPP-50)~#|#~sp14807687_sc7
Item: 24260887
Model: 4895-WPP-50
Price is $20.99
Unit of measure 50/Pack
Delivery by Mon, May 19
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JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 50/Pack (MOOP6250LDI)~#|#~m003904592_sc7JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 50/Pack (MOOP6250LDI)~#|#~m003904591_sc7
Item: 1589066
Model: MOOP6250LDI
Price is $12.19
Unit of measure 50/Pack
Delivery by Thu, May 15
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Pack, Natural Linen (4875-NLI-50)~#|#~sp14807729_sc7
Item: 24260813
Model: 4875-NLI-50
No reviews yet
Price is $16.69
Unit of measure 50/Pack
Delivery by Mon, May 19
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Pack, 24lb. Bright White (4865-W-50)~#|#~sp14807792_sc7
Item: 24261323
Model: 4865-W-50
No reviews yet
Price is $12.19
Unit of measure 50/Pack
Delivery by Mon, May 19
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JAM Paper Self Seal A7 Invitation Envelope 5 1/4" x 7 1/4", Baby Pink, 25/Pack (155627)~#|#~sp137085709_sc7
Item: 261381
Model: 155627
Price is $13.89
Unit of measure 25/Pack
Delivery by Thu, May 15
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LUX 6 x 9 Full Face Window Envelopes 50/Pack, 28lb. Bright White (FFW-69-50)~#|#~sp14807375_sc7
Item: 24260819
Model: FFW-69-50
No reviews yet
Price is $28.99
Unit of measure 50/Pack
Delivery by Mon, May 19
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LUX 70 lb 5 3/4" x 8 3/4" A9 Vellum Envelopes, Bright White, 1000/Box~#|#~m000082145_sc7
Item: 1028607
Model: 4895-70W-1000
Price is $240.89
Free delivery by Mon, May 19
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LUX 70lb 4 1/8"x9 1/2" Square Flap #10 Envelopes, Bright White, 500/BX~#|#~m000211252_sc7
Item: 513630
Model: 4860-70W-500
Price is $104.89
Free delivery by Mon, May 19
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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 $25.29
Unit of measure 50/Pack
Delivery by Mon, May 19
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JAM Paper #10 Business Translucent Vellum Envelopes, 4.125 x 9.5, Primary Yellow, 50/Pack (PACV356I)~#|#~m002169008_sc7
Item: 1588554
Model: PACV356I
No reviews yet
Price is $49.59
Unit of measure 50/Pack
Free delivery by Thu, May 15
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Smoke (EX4880-22-50)~#|#~m005902333_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Smoke (EX4880-22-50)~#|#~m005823972_sc7
Item: 282827
Model: EX4880-22-50
Price is $25.39
Unit of measure 50/Pack
Delivery by Mon, May 19
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Ecru with Gold Foil, 25/Pack (2354150)~#|#~sp137086610_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Ecru with Gold Foil, 25/Pack (2354150)~#|#~sp137086016_sc7
Item: 262761
Model: 2354150
Price is $19.99
Unit of measure 25/Pack
Delivery by Thu, May 15
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Ultra Lime Green, 50/Pack (52610I)~#|#~m003904596_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Ultra Lime Green, 50/Pack (52610I)~#|#~m003904595_sc7
Item: 1588929
Model: 52610I
Price is $19.99
Unit of measure 50/Pack
Delivery by Thu, May 15
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JAM Paper #10 Policy Metallic Business Envelopes, 4 1/8" x 9 1/2", Stardream Gold, 25/Pack (1261602)~#|#~m003904738_sc7JAM Paper #10 Policy Metallic Business Envelopes, 4 1/8" x 9 1/2", Stardream Gold, 25/Pack (1261602)~#|#~m003904737_sc7
Item: 261973
Model: 1261602
No reviews yet
Price is $22.99
Unit of measure 25/Pack
Delivery by Thu, May 15
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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Black Linen, 25/Pack (68999)~#|#~m003904612_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Black Linen, 25/Pack (68999)~#|#~m003904611_sc7
Item: 261569
Model: 68999
Price is $13.59
Unit of measure 25/Pack
Delivery by Thu, May 15
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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.