Quality Park Gummed Kraft Catalog Envelope, 12" x 15 1/2", Light Kraft, 250/Box (41965)~#|#~s0171331_sc7
Item: 377400
Model: QUA41965
No reviews yet
Price is $139.59
Unit of measure 250/Box
Free delivery by Fri, May 01
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JAM Paper Open End Catalog Envelope, 7 1/2" x 10 1/2", White, 1000/Carton (4120B)~#|#~sp111772311_sc7JAM Paper Open End Catalog Envelope, 7 1/2" x 10 1/2", White, 1000/Carton (4120B)~#|#~sp111772310_sc7
Item: 367013
Model: 4120B
Price is $206.59
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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LUX #7 Coin Envelopes (3 1/2 x 6 1/2) 50/Pack, Limelight (LUX-7CO-101-50)~#|#~sp14807797_sc7
Item: 24261304
Model: LUX-7CO-101-50
No reviews yet
Price is $21.69
Unit of measure 50/Pack
Delivery by Thu, May 07
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Taupe Metallic (5380-M09-50)~#|#~m005902320_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Taupe Metallic (5380-M09-50)~#|#~m005823888_sc7
Item: 2146116
Model: 5380-M09-50
No reviews yet
Price is $46.89
Unit of measure 50/Pack
Free delivery by Thu, May 07
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JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, White, Bulk 250/Box (1623183H)~#|#~sp111772483_sc7JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, White, Bulk 250/Box (1623183H)~#|#~sp111772482_sc7
Item: 1590093
Model: 1623183H
Price is $45.19
Unit of measure 250/Box
Free delivery by Tue, May 05
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (67161I)~#|#~sp112110506_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (67161I)~#|#~sp112110505_sc7
Item: 1588624
Model: 67161I
Price is $16.99
Unit of measure 50/Pack
Delivery by Tue, May 05
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Candy Pink (EX4865-14-50)~#|#~m000081693_sc7
Item: 282355
Model: EX4865-14-50
No reviews yet
Price is $13.69
Unit of measure 50/Pack
Delivery by Thu, May 07
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Lux Double Window Invoice Envelopes Wasabi 4 1/8 x 9 1/2 inch uncheck 50/Pack~#|#~m002084679_sc7
Item: 1559060
Model: INVDW-L22-50
No reviews yet
Price is $23.29
Delivery by Thu, May 07
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JAM Paper A2 Colored Invitation Envelopes, 4.375 x 5.75, Sea Blue Recycled, 25/Pack (70207)~#|#~sp123307974_sc7JAM Paper A2 Colored Invitation Envelopes, 4.375 x 5.75, Sea Blue Recycled, 25/Pack (70207)~#|#~sp123307973_sc7
Item: 263902
Model: 70207
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX 5 3/4" x 8 3/4" 60lbs. Square Flap Envelopes W/Peel & Press, White/Black LUX Lining~#|#~m000082189_sc7
Item: 282955
Model: FLWH4895-02-50
No reviews yet
Price is $21.29
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Red Recycled, 25/Pack (900927182)~#|#~m002934111_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Red Recycled, 25/Pack (900927182)~#|#~m002934110_sc7
Item: 260826
Model: 900927182
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, Black Linen with Gold Foil, 25/Pack (3243678)~#|#~m002934336_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, Black Linen with Gold Foil, 25/Pack (3243678)~#|#~m002934337_sc7
Item: 262742
Model: 3243678
No reviews yet
Price is $20.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX Self Seal Window Envelope, 6" x 9", Bright White, 1000/Pack (FFW-69-1000)~#|#~sp14807375_sc7
Item: 24260636
Model: FFW-69-1000
No reviews yet
Price is $241.49
Unit of measure 1000/Pack
Free delivery by Thu, May 07
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LUX 6" x 9" Open End Clasp Envelopes, Midnight Black, 100/Pack (87915-50)~#|#~42AE1419-DD74-49E4-BC409BD28F387D60_sc7
Item: 282275
Model: 87915-100
Price is $99.29
Unit of measure 100/Pack
Free delivery by Thu, May 07
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Ship-Lite Self Seal Catalog Envelopes, 10" x 13", White, 100/Carton (SLE10132WS)~#|#~sp48967650_sc7
Item: 947671
Model: SLE10132WS
Price is $204.09
Unit of measure 100/Carton
Free delivery by Tue, May 05
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LUX #5 1/2 Coin Envelopes with Peel & Seel, 100% Recycled, 3.125" x 5.5", Brown, 50/Box (LUX-512-GB-50)~#|#~4E2A6BB8-5EC5-4B1E-81C69F6CE523693C_sc7LUX #5 1/2 Coin Envelopes with Peel & Seel, 100% Recycled, 3.125" x 5.5", Brown, 50/Box (LUX-512-GB-50)~#|#~4F5E6CFF-FAC3-4ACC-84DF12D32E1F8A3F_sc7
Item: 1985099
Model: LUX-512CO-GB-50
No reviews yet
Price is $32.89
Unit of measure 50/Box
Delivery by Thu, May 07
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JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Cotton Gray, 50 Pack (4860-SG-50)~#|#~sp226423802_sc7JAM Paper Self Seal Business Envelope, 4 1/8 x 9 1/2, Cotton Gray, 50 Pack (4860-SG-50)~#|#~sp226423801_sc7
Item: 24578396
Model: 4860-SG-50
No reviews yet
Price is $26.19
Unit of measure 50/Pack
Delivery by Tue, May 05
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JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 100/Pack (900840420C)~#|#~m006965529_sc7JAM Paper 10 x 13 Booklet Translucent Vellum Envelopes, Clear, 100/Pack (900840420C)~#|#~m006965528_sc7
Item: 261771
Model: 900840420C
No reviews yet
Price is $129.89
Unit of measure 100/Box
Free delivery by Tue, May 05
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JAM Paper® #1 Coin Business Colored Envelopes, 2.25 x 3.5, Blue Recycled, 100/Pack (352727818F)~#|#~sp123307716_sc7JAM Paper® #1 Coin Business Colored Envelopes, 2.25 x 3.5, Blue Recycled, 100/Pack (352727818F)~#|#~sp123307624_sc7
Item: 24364869
Model: 352727818F
No reviews yet
Price is $38.49
Unit of measure 100/Pack
Free delivery by Tue, May 05
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JAM Paper 3Drug Translucent Vellum Mini Envelopes, 2.3125 x 3.625, Clear, 100/Pack (LECV900A)~#|#~sp126919245_sc7JAM Paper 3Drug Translucent Vellum Mini Envelopes, 2.3125 x 3.625, Clear, 100/Pack (LECV900A)~#|#~sp126919244_sc7
Item: 1227813
Model: LECV900A
No reviews yet
Price is $50.89
Unit of measure 100/Pack
Free delivery by Tue, May 05
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Red Foil, 25/Pack (83065)~#|#~m005223351_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, White with Red Foil, 25/Pack (83065)~#|#~m005223350_sc7
Item: 264005
Model: 83065
No reviews yet
Price is $17.09
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, White, Bulk 250/Box (4023981H)~#|#~sp121512355_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, White, Bulk 250/Box (4023981H)~#|#~sp121512354_sc7
Item: 1589849
Model: 4023981H
No reviews yet
Price is $65.39
Unit of measure 250/Box
Free delivery by Tue, May 05
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JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 25/Pack (28417)~#|#~sp129636458_sc7JAM Paper 6.5 x 6.5 Square Invitation Envelopes, White, 25/Pack (28417)~#|#~sp129636457_sc7
Item: 261303
Model: 28417
Price is $25.89
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 4.25 x 11.25, Clear, 100/Pack (NUM11CELLO)~#|#~m000068413_sc7
Item: 262919
Model: NUM11CELLO
No reviews yet
Price is $43.59
Unit of measure 100/Pack
Free delivery by Tue, May 05
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JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Ultra Fuchsia Pink, Bulk 500/Box (356730545H)~#|#~sp115352069_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Ultra Fuchsia Pink, Bulk 500/Box (356730545H)~#|#~sp115352067_sc7
Item: 2103419
Model: 356730545H
No reviews yet
Price is $152.99
Unit of measure 500/Box
Free delivery by Tue, May 05
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, A6, 4.9375 x 6.5625, Clear, 1000/Carton (A6CELLOB)~#|#~m000068416_sc7
Item: 262926
Model: A6CELLOB
No reviews yet
Price is $209.99
Unit of measure 1000/Carton
Free delivery by Tue, May 05
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LUX 6 1/2 x 6 1/2 Square Envelopes, 500/Box, Grocery Bag (8535-GB-500)
Item: 514783
Model: 8535-GB-500
No reviews yet
Price is $132.99
Free delivery by Thu, May 07
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JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Gold, 25/Pack (GCST708)~#|#~m003905144_sc7JAM Paper A7 Metallic Invitation Envelopes, 5.25 x 7.25, Stardream Gold, 25/Pack (GCST708)~#|#~m003905143_sc7
Item: 261968
Model: GCST708
No reviews yet
Price is $29.89
Unit of measure 25/Pack
Delivery by Tue, May 05
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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 $104.29
Unit of measure 100/Box
Free Next-Day eligible by tomorrow
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Tyvek Self Seal Catalog Envelope, 10 1/2" x 7 1/2", White, 100/Carton (TYF0710WH)~#|#~38EED49E-E3AC-4D9A-9D4F5487AA6F66E0_sc7
Item: 947686
Model: TYF0710WH
No reviews yet
Price is $101.79
Unit of measure 100/Carton
Free delivery by Tue, May 05
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LUX Moistenable Glue Document Envelope, 9" x 12", Bright White, 500/Pack (8193-TAX-500)~#|#~sp20150752_sc7
Item: 24294204
Model: 8193-TAX-500
Price is $116.79
Unit of measure 500/Pack
Free delivery by Thu, May 07
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LUX A8 Invitation Envelopes (5 1/2 x 8 1/8) 50/Box, 80lb. Bright White (FE4585-05-50)~#|#~m000082125_sc7
Item: 282877
Model: FE4585-05-50
No reviews yet
Price is $32.29
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper Self Seal Invitation Envelope, 4 x 4, Gray, 50 Pack (8504-22-50)~#|#~sp226423820_sc7JAM Paper Self Seal Invitation Envelope, 4 x 4, Gray, 50 Pack (8504-22-50)~#|#~sp226423819_sc7
Item: 24578472
Model: 8504-22-50
No reviews yet
Price is $16.29
Unit of measure 50/Pack
Delivery by Tue, May 05
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Over 30
JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 25/Pack (356730549)~#|#~m003757871_sc7JAM Paper #5.5 Coin Business Colored Envelopes, 3.125 x 5.5, Blue Recycled, 25/Pack (356730549)~#|#~m003562857_sc7
Item: 2103445
Model: 356730549
No reviews yet
Price is $11.49
Unit of measure 25/Pack
Delivery by Tue, May 05
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JAM Paper 6 x 6 Square Colored Invitation Envelopes, Green Recycled, 25/Pack (2792267)~#|#~m003904795_sc7JAM Paper 6 x 6 Square Colored Invitation Envelopes, Green Recycled, 25/Pack (2792267)~#|#~m003904794_sc7
Item: 261276
Model: 2792267
No reviews yet
Price is $27.99
Unit of measure 25/Pack
Delivery by Tue, May 05
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural White - 100% Cotton (4880-SN-50)~#|#~m005902298_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural White - 100% Cotton (4880-SN-50)~#|#~m005823931_sc7
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Box, Natural White - 100% Cotton (4880-SN-50) is Out of stock
Item: 282796
Model: 4880-SN-50
No reviews yet
Price is $48.39
Unit of measure 50/Pack
Quality Park 9" x 12" Yellow Clasp Envelopes, 10/Pack~#|#~s0171295_sc7
Quality Park 9" x 12" Yellow Clasp Envelopes, 10/Pack is Out of stock
Item: 507881
Model: QUA38736
Unit of measure 10/Pack
Neenah Paper Self Seal A6 Invitation Envelope, #70, Solar White, 1000/Carton (6660400)~#|#~s1015150_sc7
Neenah Paper Self Seal A6 Invitation Envelope, #70, Solar White, 1000/Carton (6660400) is Out of stock
Item: 2087527
Model: 6660400
No reviews yet
Price is $150.49
Unit of measure 1000/Carton
JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388)~#|#~sp61031269_sc7JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388)~#|#~sp61031267_sc7
JAM Paper Tear-Proof Tyvek Open End Catalog Envelopes, 11.5" x 14.5", Red, 25/Pack (V021388) is Out of stock
Item: 261829
Model: V021388
No reviews yet
Price is $73.19
Unit of measure 25/Pack
LUX 70lb 4 1/8"x9 1/2" Sqaure Flap #10 Envelopes, Magenta Pink, 500/BX~#|#~m004940454_sc7LUX 70lb 4 1/8"x9 1/2" Sqaure Flap #10 Envelopes, Magenta Pink, 500/BX~#|#~m005823998_sc7
LUX 70lb 4 1/8"x9 1/2" Sqaure Flap #10 Envelopes, Magenta Pink, 500/BX is Out of stock
Item: 516416
Model: EX4860-10-500
Price is $93.09
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.