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Lux Double Window Invoice Envelopes Citrus 4 1/8 x 9 1/2 inch 50/Pack~#|#~m002084678_sc7
Item: 1559063
Model: INVDW-L20-50
No reviews yet
Price is $49.89
Free delivery by Wed, Feb 18
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Wisteria (LUX-4872-106-50)~#|#~m000081885_sc7
Item: 282576
Model: LUX-4872-106-50
No reviews yet
Price is $15.19
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper Booklet Envelope, 9" x 12", Red, 50/Pack (17253I)~#|#~sp121512607_sc7JAM Paper Booklet Envelope, 9" x 12", Red, 50/Pack (17253I)~#|#~sp121512606_sc7
Item: 24052292
Model: 17253I
No reviews yet
Price is $38.39
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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LUX 5 3/4" x 8 3/4" 3.5 mil Square Flap Envelopes W/Peel & Seal, Crystal Clear, 50/Pack~#|#~m000081564_sc7
Item: 282915
Model: CCA9-50
No reviews yet
Price is $19.59
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper Self Seal Catalog Envelope, 9" x 12", Blue, 25/Pack (188047509)~#|#~BCEE1DDE-46A6-48C5-B6F82BD3A3F03EB0_sc7
Item: 24557956
Model: 188047509
No reviews yet
Price is $24.99
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Natural White Wove, 25/Pack (191223)~#|#~m007159185_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Natural White Wove, 25/Pack (191223)~#|#~m007159184_sc7
Item: 262546
Model: 191223
No reviews yet
Price is $11.79
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", White, 25/Pack (49856)~#|#~sp115352044_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", White, 25/Pack (49856)~#|#~sp115352043_sc7
Item: 366523
Model: 49856
No reviews yet
Price is $9.59
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Holiday Red (FE4265-15-50)~#|#~m000081710_sc7
Item: 282372
Model: FE4265-15-50
No reviews yet
Price is $13.29
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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Partners Tyvek Envelopes, 10" x 13", Green, 100/Case (TYC1013G)~#|#~m004079055_sc7
Item: 2301086
Model: TYC1013G
No reviews yet
Price is $133.99
Unit of measure 100/Carton
Free delivery by Mon, Feb 16
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JAM Paper 9 x 12 Booklet Translucent Vellum Envelopes, Gold, 25/Pack (1592176)~#|#~m003904786_sc7JAM Paper 9 x 12 Booklet Translucent Vellum Envelopes, Gold, 25/Pack (1592176)~#|#~m003904785_sc7
Item: 262259
Model: 1592176
No reviews yet
Price is $57.99
Unit of measure 25/Pack
Free delivery by Mon, Feb 16
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JAM Paper Cellophane Envelope with Peel & Seal Closure, 6.4375 x 8.25, Clear, 100/Pack (A8CELLO)~#|#~m000068418_sc7
Item: 262896
Model: A8CELLO
Price is $33.39
Unit of measure 100/Pack
Delivery by Mon, Feb 16
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LUX 5 3/4" x 8 3/4" 70lbs. A9 Invitation Envelopes W/Peel & Press, Ruby Red, 50/Pack~#|#~m000082178_sc7
Item: 282943
Model: EX4895-18-50
No reviews yet
Price is $33.19
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper #12 Policy Business Envelopes, 4.75 x 11, White, 25/Pack (1623188)~#|#~sp116347490_sc7JAM Paper #12 Policy Business Envelopes, 4.75 x 11, White, 25/Pack (1623188)~#|#~sp116347483_sc7
Item: 366593
Model: 1623188
Price is $13.59
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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JAM Paper #10 Business Envelopes, 4.125 x 9.5, Navy Blue, Bulk 500/Box (LEBA367H)~#|#~m003905150_sc7JAM Paper #10 Business Envelopes, 4.125 x 9.5, Navy Blue, Bulk 500/Box (LEBA367H)~#|#~m003905149_sc7
Item: 1589703
Model: LEBA367H
No reviews yet
Price is $122.99
Unit of measure 500/Box
Free delivery by Mon, Feb 16
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JAM Paper 9 x 12 Booklet Colored Envelopes, Blue Recycled, 50/pack (5156774i)~#|#~sp129636841_sc7JAM Paper 9 x 12 Booklet Colored Envelopes, Blue Recycled, 50/pack (5156774i)~#|#~sp129636840_sc7
Item: 2478147
Model: 5156774I
Price is $38.49
Unit of measure 50/Pack
Free delivery by Mon, Feb 16
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Aqua, 50/Pack (21520986I)~#|#~m002934469_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Aqua, 50/Pack (21520986I)~#|#~m003904907_sc7
Item: 1588687
Model: 21520986I
No reviews yet
Price is $22.99
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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JAM Paper 9 x 12 Metallic Booklet Envelopes, Stardream Gold, 100/Pack (v018321c)~#|#~sp131391301_sc7JAM Paper 9 x 12 Metallic Booklet Envelopes, Stardream Gold, 100/Pack (v018321c)~#|#~sp131391300_sc7
Item: 2477995
Model: V018321C
No reviews yet
Price is $189.99
Unit of measure 100/Pack
Free delivery by Mon, Feb 16
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes W/Glue, Amethyst Metallic Purple, 250/BX~#|#~m004940421_sc7LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes W/Glue, Amethyst Metallic Purple, 250/BX~#|#~m005823899_sc7
Item: 385007
Model: 5360-17-250
No reviews yet
Price is $109.99
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Pack, Blush (LUX-4880-39-50)~#|#~sp5822112_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 50/Pack, Blush (LUX-4880-39-50)~#|#~sp5874356_sc7
Item: 23996058
Model: LUX-4880-39-50
No reviews yet
Price is $20.39
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 1000/Pack (MOOP6250LDB)~#|#~m003904592_sc7JAM Paper A2 Invitation Envelope, 4 3/8" x 5 3/4", White, 1000/Pack (MOOP6250LDB)~#|#~m003904591_sc7
Item: 366205
Model: MOOP6250LDB
Price is $127.49
Unit of measure 1000/Pack
Free delivery by Mon, Feb 16
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JAM Paper Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", Blue, 500/Pack (5360-13-500)~#|#~sp228873255_sc7
Item: 24578294
Model: 5360-13-500
No reviews yet
Price is $141.49
Unit of measure 500/Pack
Free delivery by Mon, Feb 16
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LUX Photo Greeting Invitation Envelopes (4 3/8 x 8 1/4) 50/Pack, 70lb. Bright White (PHGC1-50)~#|#~sp14807645_sc7
Item: 24260690
Model: PHGC1-50
No reviews yet
Price is $16.19
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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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 $17.09
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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80 lb 6 1/4" x 6 1/4" Peel & Press Square Envelopes, Midnight Black, 50/Pack~#|#~m001149685_sc7
Item: 1030064
Model: LUX-8530-B-50
No reviews yet
Price is $40.39
Free delivery by Wed, Feb 18
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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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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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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Teal, 25/Pack (157462)~#|#~m003904714_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Teal, 25/Pack (157462)~#|#~m003904713_sc7
Item: 363970
Model: 157462
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Mon, Feb 16
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 50/Pack, Blonde Metallic (4872-M07-50)~#|#~sp14807620_sc7
Item: 24260702
Model: 4872-M07-50
Price is $13.29
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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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 Wed, Feb 18
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Vintage Plum (LUX-4880-104500)~#|#~m005902345_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Vintage Plum (LUX-4880-104500)~#|#~m005823979_sc7
Item: 517473
Model: LUX-4880-104500
No reviews yet
Price is $197.49
Free delivery by Wed, Feb 18
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LUX 5 1/2 x 5 1/2 Square Envelopes, 250/Box, Sunflower (EX8515-12-250)~#|#~m000081501_sc7
Item: 387033
Model: EX8515-12-250
No reviews yet
Price is $88.89
Unit of measure 250/Box
Free delivery by Wed, Feb 18
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JAM Paper 7 1/2 x 7 1/2 Square Envelopes ,Sunflower, 50 Pack, Yellow (EX8555-12-50)~#|#~sp228873560_sc7
Item: 24578550
Model: EX8555-12-50
No reviews yet
Price is $19.49
Unit of measure 50/Pack
Delivery by Mon, Feb 16
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LUX 80lb 4 3/8"x5 3/4" A2 RSVP, Invitation Envelopes W/Glue, Aquamarine Metallic, 500/BX~#|#~m000081684_sc7
Item: 515800
Model: 5370-02-500
No reviews yet
Price is $110.89
Free delivery by Wed, Feb 18
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Limelight (LUX-4590-101-50)~#|#~sp12274947_sc7LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Limelight (LUX-4590-101-50)~#|#~sp14081688_sc7
Item: 24216127
Model: LUX-4590-101-50
No reviews yet
Price is $37.04
Unit of measure 50/Pack
Free delivery by Wed, Feb 18
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Azalea Metallic (5370-24-50)~#|#~m000081766_sc7
Item: 282432
Model: 5370-24-50
No reviews yet
Price is $18.59
Unit of measure 50/Pack
Delivery by Wed, Feb 18
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LUX Open End Envelopes 9" x 12", Navy Blue~#|#~m001406668_sc7
Item: 1277799
Model: LUX-1590-103-1M
No reviews yet
Price is $480.69
Unit of measure 1000/Box
Free delivery by Wed, Feb 18
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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.