LUX A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) 50/Box, Natural w/Red LUX Lining (FLNT4872-01-50)~#|#~m005823922_sc7
Item: 282555
Model: FLNT4872-01-50
No reviews yet
Price is $21.99
Unit of measure 50/Pack
Delivery by Mon, May 11
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LUX 80lbs. 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Peel & Press, Midnight Black, 1000/BX~#|#~m000081720_sc7
Item: 387520
Model: F-4595-B-1000
No reviews yet
Price is $228.19
Unit of measure 1000/Box
Free delivery by Mon, May 11
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LUX A2 (4 3/8 x 5 3/4) 500/Box, Limelight (LUX-4870-101500)~#|#~m000081798_sc7
Item: 517514
Model: LUX-4870-101500
No reviews yet
Price is $91.19
Free delivery by Mon, May 11
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JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Seafoam Green, 500/Pack (8510-113-500)~#|#~sp225302916_sc7JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Seafoam Green, 500/Pack (8510-113-500)~#|#~sp225303148_sc7
Item: 24578299
Model: 8510-113-500
No reviews yet
Price is $79.99
Unit of measure 500/Pack
Free delivery by Thu, May 07
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JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Gold, Bulk 1000/Carton (GCST608B)~#|#~m003905132_sc7JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Gold, Bulk 1000/Carton (GCST608B)~#|#~m003905131_sc7
Item: 262046
Model: GCST608B
No reviews yet
Price is $677.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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LUX 6 1/4 x 6 1/4 Square Envelopes, 500/Box, Silver Metallic (8530-06-500)~#|#~m003307878_sc7
Item: 1985303
Model: 8530-06-500
No reviews yet
Price is $210.79
Unit of measure 500/Box
Free delivery by Mon, May 11
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LUX A7 Foil Lined Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, White w/Red LUX Lining (FLWH4880-01-500)~#|#~m000082099_sc7
Item: 513813
Model: FLWH4880-01-500
No reviews yet
Price is $130.89
Free delivery by Mon, May 11
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LUX 5 1/4 x 5 1/4 Square Envelopes 250/Pack, 70lb. Bright White (8510-70W-250)~#|#~sp14807793_sc7
Item: 24260288
Model: 8510-70W-250
No reviews yet
Price is $51.19
Unit of measure 250/Pack
Free delivery by Mon, May 11
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LUX 7 x 7 Square Envelopes, 50/Box, Wisteria (LUX-8545-106-50)~#|#~m000081638_sc7
Item: 282288
Model: LUX-8545-106-50
No reviews yet
Price is $26.69
Unit of measure 50/Pack
Delivery by Mon, May 11
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LUX 6 1/2 x 6 1/2 Square Envelopes, 1000/Box, Midnight Black (F-8535-B-1000)~#|#~m000081489_sc7
Item: 514090
Model: F-8535-B-1000
No reviews yet
Price is $216.59
Free delivery by Mon, May 11
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JAM Paper Self Seal Invitation Envelope, 3 1/4 x 3 1/4 , Smoke,  50 Pack, Gray (8503-22-50)~#|#~sp226423823_sc7JAM Paper Self Seal Invitation Envelope, 3 1/4 x 3 1/4 , Smoke,  50 Pack, Gray (8503-22-50)~#|#~sp226423822_sc7
Item: 24578484
Model: 8503-22-50
No reviews yet
Price is $12.29
Unit of measure 50/Pack
Delivery by Thu, May 07
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JAM Paper 6.5 x 6.5 Square Translucent Vellum Envelopes, Leaf Green, Bulk 250/Box (1592115H)~#|#~m002168281_sc7
Item: 1589803
Model: 1592115H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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Lux Double Window Invoice Envelopes, 4-1/8 x 9-1/8", Ruby Red, 250/Pack~#|#~m002084693_sc7
Item: 1559062
Model: INVDW-18-250
Price is $103.89
Free delivery by Mon, May 11
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LUX 6 1/2 x 6 1/2 Square Envelopes 50/Pack, Navy (LUX-8535-103-50)~#|#~sp14807649_sc7
Item: 24261051
Model: LUX-8535-103-50
No reviews yet
Price is $23.89
Unit of measure 50/Pack
Delivery by Mon, May 11
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JAM Paper Square Envelopes, Peel & Press, Garnet, 6 x 6, 250 Pack (8525-101-250)~#|#~sp228873530_sc7
Item: 24578476
Model: 8525-101-250
No reviews yet
Price is $46.59
Unit of measure 250/Pack
Free delivery by Thu, May 07
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LUX 5 x 5 Square Envelopes 1000/Pack, Sunflower (LUX-8505-121000)~#|#~sp5822112_sc7LUX 5 x 5 Square Envelopes 1000/Pack, Sunflower (LUX-8505-121000)~#|#~sp5874313_sc7
Item: 23996424
Model: LUX-8505-121000
No reviews yet
Price is $109.59
Unit of measure 1000/Pack
Free delivery by Mon, May 11
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LUX Self Seal Booklet Envelope, 6" x 9", Magenta, 50/Pack (EX4820-10-50)~#|#~sp14807355_sc7
Item: 24261288
Model: EX4820-10-50
No reviews yet
Price is $21.09
Unit of measure 50/Pack
Delivery by Mon, May 11
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Seafoam (LUX-8515-113-50)~#|#~m000081498_sc7
Item: 282129
Model: LUX-8515-113-50
No reviews yet
Price is $43.89
Unit of measure 50/Pack
Free delivery by Mon, May 11
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JAM Paper Self Seal Catalog Envelope, 6" x 9", Blue, 50/Pack (187947509I)~#|#~495A9BB2-F832-4707-BA355D0C80CDD999_sc7
Item: 24557979
Model: 187947509I
No reviews yet
Price is $38.39
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 6 1/4 x 6 1/4 Square Envelopes, 50/Box, Ruby Red (LUX-8530-18-50)~#|#~m003307880_sc7
Item: 1985254
Model: LUX-8530-18-50
No reviews yet
Price is $24.59
Unit of measure 50/Box
Delivery by Mon, May 11
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JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Gold, 25/Pack (PACV597)~#|#~m003905181_sc7JAM Paper 8.5 x 8.5 Square Translucent Vellum Invitation Envelopes, Gold, 25/Pack (PACV597)~#|#~m003904787_sc7
Item: 262257
Model: PACV597
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Thu, May 07
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 1000/Box, White Linen (4872-WLI-1000)~#|#~m000211237_sc7
Item: 516204
Model: 4872-WLI-1000
No reviews yet
Price is $153.79
Free delivery by Mon, May 11
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LUX 70lb 7 1/4"x5 1/4" A7 Vertical Envelopes W/Peel&Press, Grocery Bag Brown, 500/BX~#|#~0F2CBB43-07A5-4851-8304EB3C87900A5D_sc7
Item: 516018
Model: 4880V-GB-500
No reviews yet
Price is $139.99
Free delivery by Mon, May 11
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, Pool (LUX-4872-102-25)~#|#~m000081871_sc7
Item: 388596
Model: LUX-4872-102-25
No reviews yet
Price is $68.09
Unit of measure 250/Box
Free delivery by Mon, May 11
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JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, Bulk 250/Box (PACV504H)~#|#~m006948420_sc7JAM Paper 5.5 x 5.5 Square Translucent Vellum Invitation Envelopes, Wisteria Purple, Bulk 250/Box (PACV504H)~#|#~m006948419_sc7
Item: 1589730
Model: PACV504H
No reviews yet
Price is $283.99
Unit of measure 250/Box
Free delivery by Thu, May 07
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LUX A2 (4 3/8 x 5 3/4) 500/Box, Smoke (EX4870-22-500)~#|#~m001623013_sc7
Item: 514407
Model: EX4870-22-500
No reviews yet
Price is $120.49
Free delivery by Mon, May 11
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Gold, 25/Pack (PACV577)~#|#~m003905180_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Gold, 25/Pack (PACV577)~#|#~m003905179_sc7
Item: 262255
Model: PACV577
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Thu, May 07
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JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Bright White Wove, Bulk 1000/Carton (STTW761B)~#|#~m007159240_sc7JAM Paper A8 Strathmore Invitation Envelopes, 5.5 x 8.125, Bright White Wove, Bulk 1000/Carton (STTW761B)~#|#~m007159124_sc7
Item: 262627
Model: STTW761B
No reviews yet
Price is $272.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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JAM Paper A8 Translucent Vellum Invitation Envelopes, 5.5 x 8.125, Clear, 50/Pack (79462I)~#|#~m002168797_sc7
Item: 1589081
Model: 79462I
No reviews yet
Price is $47.99
Unit of measure 50/Pack
Free delivery by Thu, May 07
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LUX 3 1/4" x 3 1/4" Square Envelopes with Peel and Press, Champagne Metallic, 500/PK (8503-M08-500)~#|#~m003307882_sc7
Item: 1985007
Model: 8503-M08-500
No reviews yet
Price is $175.39
Unit of measure 500/Box
Free delivery by Mon, May 11
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 1000/Box, Anthracite Metallic (5365-15-1000)~#|#~m000081683_sc7
Item: 385090
Model: 5365-15-1000
No reviews yet
Price is $204.19
Unit of measure 1000/Box
Free delivery by Mon, May 11
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LUX 6 1/2 x 6 1/2 Square Envelopes, 250/Box, Holiday Red (8535-15-250)~#|#~m000081572_sc7
Item: 385803
Model: 8535-15-250
No reviews yet
Price is $55.69
Unit of measure 250/Box
Free delivery by Mon, May 11
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JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Presidential Blue, Bulk 1000/Carton (563916919B)~#|#~m003000923_sc7JAM Paper 8.5 x 8.5 Square Invitation Envelopes, Presidential Blue, Bulk 1000/Carton (563916919B)~#|#~m003000922_sc7
Item: 261150
Model: 563916919B
No reviews yet
Price is $846.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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LUX 80lbs. 4 1/4" x 6 1/4" A4 Photo, Invitation Envelopes W/Peel & Press, Silver/Black, 1000/BX~#|#~m004940484_sc7LUX 80lbs. 4 1/4" x 6 1/4" A4 Photo, Invitation Envelopes W/Peel & Press, Silver/Black, 1000/BX~#|#~m005823925_sc7
Item: 388419
Model: FLSL4872-02-100
No reviews yet
Price is $334.89
Unit of measure 1000/Box
Free delivery by Mon, May 11
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Black Linen, Bulk 1000/Carton (V01205B)~#|#~m003905207_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Black Linen, Bulk 1000/Carton (V01205B)~#|#~m003905206_sc7
Item: 261600
Model: V01205B
No reviews yet
Price is $306.99
Unit of measure 1000/Pack
Free delivery by Thu, May 07
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Over 30
LUX #10 Kraft Window Envelopes (4 1/8 x 9 1/2) 250/Pack, 24lb. Brown Kraft (97767-250)~#|#~sp14807341_sc7
Item: 24260664
Model: 97767-250
No reviews yet
Price is $36.99
Unit of measure 250/Pack
Free delivery by Mon, May 11
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LUX 5 1/2 x 5 1/2 Square Envelopes, 250/Box, Holiday Green (8515-12-250)~#|#~m000081475_sc7
Item: 385714
Model: 8515-12-250
No reviews yet
Price is $49.29
Unit of measure 250/Box
Free delivery by Mon, May 11
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Quality Park Gummed Kraft Catalog Envelope, 9 1/2" x 12 1/2", Kraft, 250/Bx (41565)~#|#~s0171318_sc7
Item: QUA41565
Model: QUA41565
Price is $117.00
Unit of measure 250/Box
Free delivery by Tue, May 05
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JAM Paper 5 x 6.125 Booklet Foil Envelopes with Self-Adhesive Closure, Silver Film Design, 100/Pack (01323265B)~#|#~sp137084268_sc7
Item: 260931
Model: 01323265B
No reviews yet
Price is $108.99
Unit of measure 100/Box
Free delivery by Thu, May 07
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JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, Bulk 1000/Carton (30243B)~#|#~m007159123_sc7JAM Paper A6 Strathmore Invitation Envelopes, 4.75 x 6.5, Natural White Wove, Bulk 1000/Carton (30243B)~#|#~m007159122_sc7
Item: 262645
Model: 30243B
No reviews yet
Price is $227.99
Unit of measure 1000/Carton
Free delivery by Thu, May 07
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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.