LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Pack, Natural Linen (4865-NLI-50)~#|#~sp14807598_sc7
Item: 24260728
Model: 4865-NLI-50
Price is $15.19
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX #14 Open End Envelopes (5 x 11 1/2) 250/Box, 28lb. White (WS-5200-250)~#|#~m004063926_sc7
Item: 2146551
Model: WS-5200-250
No reviews yet
Price is $97.60
Unit of measure 250/Pack
Free delivery by Wed, Dec 17
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JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Violet Purple Recycled, 50/Pack (4156910I)~#|#~m003904869_sc7JAM Paper #12 Policy Business Colored Envelopes, 4.75 x 11, Violet Purple Recycled, 50/Pack (4156910I)~#|#~m003904868_sc7
Item: 1588406
Model: 4156910I
No reviews yet
Price is $38.59
Unit of measure 50/Pack
Free delivery by Mon, Dec 15
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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, Dec 17
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LUX 6 1/2 x 6 1/2 Square Envelopes, 1000/Box, Mandarin (EX8535-11-1000)~#|#~m000081577_sc7
Item: 387316
Model: EX8535-11-1000
No reviews yet
Price is $256.08
Unit of measure 1000/Box
Free delivery by Wed, Dec 17
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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 Mon, Dec 15
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JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Baby Blue, 50/Pack (155626I)~#|#~m003904708_sc7JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Baby Blue, 50/Pack (155626I)~#|#~m003904707_sc7
Item: 1588921
Model: 155626I
No reviews yet
Price is $23.29
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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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, Dec 17
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JAM Paper #3 Coin Business Colored Envelopes, 2.5 x 4.25, Orange Recycled, 25/Pack (356730538)~#|#~m003757861_sc7JAM Paper #3 Coin Business Colored Envelopes, 2.5 x 4.25, Orange Recycled, 25/Pack (356730538)~#|#~m003750592_sc7
Item: 2103485
Model: 356730538
No reviews yet
Price is $9.99
Unit of measure 25/Pack
Delivery by Mon, Dec 15
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Blonde Metallic (4590-M07-50)~#|#~sp12274947_sc7LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Blonde Metallic (4590-M07-50)~#|#~sp14081669_sc7
Item: 24216235
Model: 4590-M07-50
No reviews yet
Price is $33.59
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Electric Orange, 500/Pack (WS-7611-500)~#|#~E57CB32D-215A-4DE5-BA529881E162AA9E_sc7LUX Moistenable Glue Envelope 3 1/8" x 6 1/4", Electric Orange, 500/Pack (WS-7611-500)~#|#~59043B3F-1198-4F9B-A0D39F17DE20C945_sc7
Item: 23996822
Model: WS-7611-500
No reviews yet
Price is $76.89
Unit of measure 500/Pack
Free delivery by Wed, Dec 17
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80 lb 6 1/4" x 6 1/4" Peel & Press Square Linen Envelopes, White, 500/Box~#|#~m001149702_sc7
Item: 1028557
Model: 8530-WLI-500
No reviews yet
Price is $162.89
Free delivery by Wed, Dec 17
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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 Mon, Dec 15
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LUX A2 (4 3/8 x 5 3/4) 250/Box, Ruby Red (EX4870-18-250)~#|#~m000081820_sc7
Item: 514414
Model: EX4870-18-250
No reviews yet
Price is $83.99
Free delivery by Wed, Dec 17
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LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, White w/Silver LUX Lining (FLWH4872-03-50)~#|#~m004940488_sc7LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, White w/Silver LUX Lining (FLWH4872-03-50)~#|#~m005823930_sc7
Item: 282575
Model: FLWH4872-03-50
Price is $15.59
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 5.0625 x 7.1875, Green, 100/Pack (2783135)~#|#~m000969557_sc7
Item: 235573
Model: 2783135
No reviews yet
Price is $48.99
Unit of measure 100/Pack
Free delivery by Mon, Dec 15
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LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Ruby Red (LUX-4590-18-50)~#|#~sp12274947_sc7LUX A10 Invitation Envelopes (6 x 9 1/2) 50/Pack, Ruby Red (LUX-4590-18-50)~#|#~sp14081672_sc7
Item: 24216129
Model: LUX-4590-18-50
No reviews yet
Price is $27.99
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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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, Dec 15
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LUX 5 1/4 x 5 1/4 Square Envelopes 50/Pack, Natural Linen (8510-NLI-50)~#|#~sp14807801_sc7
Item: 24261299
Model: 8510-NLI-50
No reviews yet
Price is $19.79
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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JAM Paper 9 x 12 Booklet Envelopes, Baby Pink, 100/Pack (31512738c)~#|#~sp4211410_sc7JAM Paper 9 x 12 Booklet Envelopes, Baby Pink, 100/Pack (31512738c)~#|#~sp4211409_sc7
Item: 2478072
Model: 31512738C
No reviews yet
Price is $83.99
Unit of measure 100/Pack
Free delivery by Mon, Dec 15
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JAM Paper Booklet Envelopes with Peel & Seal Closure, 9.5 x 12.5, White, 500/Box (367934168)~#|#~sp74204098_sc7JAM Paper Booklet Envelopes with Peel & Seal Closure, 9.5 x 12.5, White, 500/Box (367934168)~#|#~sp74203863_sc7
Item: 24295254
Model: 367934168
No reviews yet
Price is $540.69
Unit of measure 500/Pack
Free delivery by Mon, Dec 15
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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, Dec 15
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 1000/Box, White - 100% Recycled (4865-WPC-1000)~#|#~m000161365_sc7
Item: 384682
Model: 4865-WPC-1000
No reviews yet
Price is $146.25
Unit of measure 1000/Box
Free delivery by Wed, Dec 17
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LUX A2 (4 3/8 x 5 3/4) 50/Box, White w/Red LUX Lining (FLWH4870-01-50)~#|#~m000081841_sc7
Item: 282526
Model: FLWH4870-01-50
Price is $27.59
Unit of measure 50/Pack
Delivery by Wed, Dec 17
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LUX Moistenable Glue #10 Window Envelope, 4 1/2" x 9 1/2", Grocery Bag Brown, 250/Box (4860-WGB-250)~#|#~m000081333_sc7
Item: 384616
Model: 4860-WGB-250
No reviews yet
Price is $81.89
Unit of measure 250/Box
Free delivery by Wed, Dec 17
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LUX 6 1/2 x 6 1/2 Foil Lined Square Envelopes, 500/Box, White w/Red LUX Lining (FLWH8535-01-500)~#|#~m000081599_sc7
Item: 513771
Model: FLWH8535-01-500
No reviews yet
Price is $120.34
Free delivery by Wed, Dec 17
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JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Red Recycled, Bulk 250/Box (67503H)~#|#~sp115352048_sc7JAM Paper A6 Colored Invitation Envelopes, 4.75 x 6.5, Red Recycled, Bulk 250/Box (67503H)~#|#~sp115352047_sc7
Item: 1589098
Model: 67503H
No reviews yet
Price is $81.29
Unit of measure 250/Box
Free delivery by Mon, Dec 15
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LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, Garnet (EX8535-26-250)~#|#~m000081586_sc7
Item: 387349
Model: EX8535-18-250
No reviews yet
Price is $112.89
Unit of measure 250/Box
Free delivery by Wed, Dec 17
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JAM Paper 9" x 12" Booklet Envelopes, Black, 25/Pack (2112755)~#|#~sp121511842_sc7JAM Paper 9" x 12" Booklet Envelopes, Black, 25/Pack (2112755)~#|#~sp121511841_sc7
Item: 38356
Model: 2112755
Price is $52.49
Unit of measure 25/Pack
Free delivery by Mon, Dec 15
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JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Red Recycled, Bulk 250/Box (27799H)~#|#~sp132864474_sc7JAM Paper A8 Colored Invitation Envelopes, 5.5 x 8.125, Red Recycled, Bulk 250/Box (27799H)~#|#~sp132864473_sc7
Item: 1589957
Model: 27799H
No reviews yet
Price is $82.99
Unit of measure 250/Box
Free delivery by Mon, Dec 15
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JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA367I)~#|#~m003905150_sc7JAM Paper Open End #10 Business Envelope, 4 1/8" x 9 1/2", Navy Blue, 50/Pack (LEBA367I)~#|#~m003905149_sc7
Item: 1588601
Model: LEBA367I
Price is $20.49
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, 50/Pack (2792291I)~#|#~m002934107_sc7JAM Paper 7.5 x 7.5 Square Colored Invitation Envelopes, Red Recycled, 50/Pack (2792291I)~#|#~m002934106_sc7
Item: 1588434
Model: 2792291I
No reviews yet
Price is $49.99
Unit of measure 50/Pack
Free delivery by Mon, Dec 15
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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, Dec 15
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LUX A8 Foil Lined Invitation Envelopes (5 1/2 x 8 1/8) 1000/Box, White w/Red LUX Lining (FLWH4885-011000)~#|#~m000082135_sc7
Item: 517304
Model: FLWH4885-011000
No reviews yet
Price is $253.73
Free delivery by Wed, Dec 17
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LUX 70lbs. 4 1/8" x 9 1/2" #10 Open End Envelopes, Natural, 250/BX~#|#~m000161321_sc7
Item: 385681
Model: 7716-N-250
No reviews yet
Price is $92.89
Unit of measure 250/Box
Free delivery by Wed, Dec 17
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, 50/Pack (PACV514I)~#|#~m006948422_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, 50/Pack (PACV514I)~#|#~m006948421_sc7
Item: 1588458
Model: PACV514I
No reviews yet
Price is $58.99
Unit of measure 50/Pack
Free delivery by Mon, Dec 15
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Over 30
LUX Open End Window Envelopes 9" x 12"; Mandarin Orange~#|#~m001406669_sc7
Item: 1277776
Model: LUX-1590-11-500
No reviews yet
Price is $165.93
Unit of measure 500/Box
Free delivery by Wed, Dec 17
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JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 50/Pack (155629I)~#|#~m005706328_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Pink, 50/Pack (155629I)~#|#~m007065549_sc7
Item: 1589137
Model: 155629I
No reviews yet
Price is $26.49
Unit of measure 50/Pack
Delivery by Mon, Dec 15
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LUX A2 (4 3/8 x 5 3/4) 1000/Box, Limelight (LUX-4870-101-10)~#|#~m000081798_sc7
Item: 388542
Model: LUX-4870-101-10
No reviews yet
Price is $125.82
Unit of measure 1000/Box
Free delivery by Wed, Dec 17
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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, Dec 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.