LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, Sunflower (LUX-4872-12-250)~#|#~m000081877_sc7
Item: 513698
Model: LUX-4872-12-250
Price is $62.49
Free delivery by Tue, Dec 23
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LUX 8 1/2" x 8 1/2" Square Envelopes, Silver Metallic, 250/PK (8575-06-250)~#|#~m003307876_sc7
Item: 1985054
Model: 8575-06-250
No reviews yet
Price is $136.27
Unit of measure 250/Box
Free delivery by Tue, Dec 23
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LUX 60lbs. 4 1/8" x 9 1/2" #10 Business Envelopes, White With Silver LUX Lining, 1000/BX~#|#~m000081264_sc7
Item: 388426
Model: FLWH4260-03-100
No reviews yet
Price is $202.19
Unit of measure 1000/Box
Free delivery by Tue, Dec 23
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LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Crystal Metallic (5380-30-500)~#|#~m005902319_sc7LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) 500/Box, Crystal Metallic (5380-30-500)~#|#~m000082019_sc7
Item: 514893
Model: 5380-30-500
No reviews yet
Price is $150.63
Free delivery by Tue, Dec 23
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JAM Paper Booklet Envelopes with Peel & Seal Closure, 6 x 9, White, 500/Box (367934164)~#|#~sp74203775_sc7JAM Paper Booklet Envelopes with Peel & Seal Closure, 6 x 9, White, 500/Box (367934164)~#|#~sp74204046_sc7
Item: 24295256
Model: 367934164
No reviews yet
Price is $366.59
Unit of measure 500/Pack
Free delivery by Fri, Dec 19
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80 lb 6 1/4" x 6 1/4" Peel & Press Square Linen Envelopes, Black, 250/Box~#|#~m001149685_sc7
Item: 1028563
Model: 8530-BLI-250
No reviews yet
Price is $96.13
Free delivery by Tue, Dec 23
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JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Gold, 25/Pack (GCST658)~#|#~m003905140_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Gold, 25/Pack (GCST658)~#|#~m003905139_sc7
Item: 261967
Model: GCST658
No reviews yet
Price is $29.89
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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LUX A6 Foil Lined Invitation Envelopes (4 3/4 x 6 1/2) 500/Box, Natural w/Gold LUX Lining (FLNT4875-04-500)~#|#~m000081933_sc7
Item: 513911
Model: FLNT4875-04-500
No reviews yet
Price is $125.79
Free delivery by Tue, Dec 23
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JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Gold, 50/Pack (GCST608I)~#|#~m003905132_sc7JAM Paper A2 Metallic Invitation Envelopes, 4.375 x 5.75, Stardream Gold, 50/Pack (GCST608I)~#|#~m003905131_sc7
Item: 1589059
Model: GCST608I
No reviews yet
Price is $46.19
Unit of measure 50/Pack
Free delivery by Fri, Dec 19
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JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Jupiter Red, 25/Pack (SD853520)~#|#~m002934293_sc7JAM Paper 6.5 x 6.5 Square Metallic Invitation Envelopes, Stardream Jupiter Red, 25/Pack (SD853520)~#|#~m002934292_sc7
Item: 262006
Model: SD853520
No reviews yet
Price is $33.99
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Red Foil, 25/Pack (3243655)~#|#~m005223351_sc7JAM Paper A6 Foil Lined Invitation Envelopes, 4.75 x 6.5, White with Red Foil, 25/Pack (3243655)~#|#~m005223350_sc7
Item: 262757
Model: 3243655
No reviews yet
Price is $14.29
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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JAM Paper Self Seal Invitation Envelope, 7 1/2 x 7 1/2, Midnight Black, 50 Pack, Black (F-8555-B-50)~#|#~sp226423829_sc7JAM Paper Self Seal Invitation Envelope, 7 1/2 x 7 1/2, Midnight Black, 50 Pack, Black (F-8555-B-50)~#|#~sp226423828_sc7
Item: 24578519
Model: F-8555-B-50
No reviews yet
Price is $17.59
Unit of measure 50/Pack
Delivery by Fri, Dec 19
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LUX 60lbs. 5 3/4" x 8 3/4" A9 Invitation Envelopes W/Glue, Holiday Red, 500/BX~#|#~m000082161_sc7
Item: 383937
Model: 14257-500
No reviews yet
Price is $109.99
Unit of measure 500/Box
Free delivery by Tue, Dec 23
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Black Linen, Bulk 250/Box (900906807H)~#|#~m003904584_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Black Linen, Bulk 250/Box (900906807H)~#|#~m003904583_sc7
Item: 1590024
Model: 900906807H
Price is $225.49
Unit of measure 250/Box
Free delivery by Fri, Dec 19
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JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Natural White Wove, Bulk 1000/Carton (44507B)~#|#~m007159137_sc7JAM Paper A7 Strathmore Invitation Envelopes, 5.25 x 7.25, Natural White Wove, Bulk 1000/Carton (44507B)~#|#~m007159136_sc7
Item: 262646
Model: 44507B
No reviews yet
Price is $277.49
Unit of measure 1000/Carton
Free delivery by Fri, Dec 19
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JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Bright White Wove, Bulk 1000/Carton (191220B)~#|#~m007159183_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Bright White Wove, Bulk 1000/Carton (191220B)~#|#~m007159182_sc7
Item: 262629
Model: 191220B
No reviews yet
Price is $377.49
Unit of measure 1000/Carton
Free delivery by Fri, Dec 19
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Baby Pink, 50/Pack (155698I)~#|#~sp132864380_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Baby Pink, 50/Pack (155698I)~#|#~sp132864379_sc7
Item: 1588734
Model: 155698I
Price is $32.29
Unit of measure 50/Pack
Delivery by Fri, Dec 19
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LUX 8" x 8" Square Envelopes, Ruby Red, 1000/PK (LUX-8565-18-1M)~#|#~m003307875_sc7
Item: 1985004
Model: LUX-8565-18-1M
No reviews yet
Price is $401.28
Unit of measure 1000/Box
Free delivery by Tue, Dec 23
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Racing Green, 25/Pack (1591938)~#|#~sp73452816_sc7JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Racing Green, 25/Pack (1591938)~#|#~sp73452719_sc7
Item: 263708
Model: 1591938
No reviews yet
Price is $33.39
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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LUX A2 (4 3/8 x 5 3/4) 1000/Box, Holiday Green (FE4270-12-1000)~#|#~m000081752_sc7
Item: 387818
Model: FE4270-12-1000
No reviews yet
Price is $93.09
Unit of measure 1000/Box
Free delivery by Tue, Dec 23
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JAM Paper Kraft A8 Invitation Envelopes, 5.5 x 8.125, Brown Kraft Paper Bag, 25/Pack (LEKR750)~#|#~m004672453_sc7JAM Paper Kraft A8 Invitation Envelopes, 5.5 x 8.125, Brown Kraft Paper Bag, 25/Pack (LEKR750)~#|#~m004672452_sc7
Item: 261530
Model: LEKR750
Price is $16.29
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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JAM Paper 6.25 x 7.875 Open End Foil Envelopes with Self-Adhesive Closure, Gold, 100/Pack (01323273B)~#|#~m000067467_sc7
Item: 260937
Model: 01323273B
No reviews yet
Price is $108.99
Unit of measure 100/Box
Free delivery by Fri, Dec 19
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JAM Paper A8 Parchment Invitation Envelopes, 5.5 x 8.125, Blue Recycled, 25/Pack (10411)~#|#~m003904493_sc7JAM Paper A8 Parchment Invitation Envelopes, 5.5 x 8.125, Blue Recycled, 25/Pack (10411)~#|#~m003904492_sc7
Item: 263946
Model: 10411
No reviews yet
Price is $12.09
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Quartz Metallic (8535-08-50)~#|#~454BF406-1131-46B3-8B6EEFDA28B342B0_sc7LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Quartz Metallic (8535-08-50)~#|#~701D2562-5366-4D41-B4C8286AC8FBD8EF_sc7
Item: 282224
Model: 8535-08-50
No reviews yet
Price is $31.49
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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LUX 4 1/8" x 9 1/2" #10 70lbs. Open End Envelopes, Baby Blue, 50/Pack~#|#~m000081266_sc7
Item: 281877
Model: EX7716-13-50
No reviews yet
Price is $41.80
Unit of measure 50/Pack
Free delivery by Tue, Dec 23
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 12.4375 x 18.25, Clear, 1000/Carton (12.518.25CELLOB)~#|#~A771D261-D04D-46D1-A6D49D8066566390_sc7
Item: 262939
Model: 12.518.25CELLOB
No reviews yet
Price is $934.99
Unit of measure 1000/Carton
Free delivery by Fri, Dec 19
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Navy Blue, 25/Pack (LEBA317)~#|#~m003905148_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Navy Blue, 25/Pack (LEBA317)~#|#~m003905147_sc7
Item: 261706
Model: LEBA317
Price is $14.89
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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JAM Paper 6 x 6 Square Translucent Vellum Invitation Envelopes, Primary Red, 25/Pack (PACV515)~#|#~m000068104_sc7
Item: 262243
Model: PACV515
No reviews yet
Price is $30.99
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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LUX 6.5" x 9.5" Open End Envelopes 500/Pack, Grocery Bag (LUX-1645-GB-500)~#|#~sp5822112_sc7LUX 6.5" x 9.5" Open End Envelopes 500/Pack, Grocery Bag (LUX-1645-GB-500)~#|#~A807ADEE-F355-48F6-929338B581F12426_sc7
Item: 23996431
Model: LUX-1645-GB-500
No reviews yet
Price is $115.69
Unit of measure 500/Pack
Free delivery by Tue, Dec 23
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Lux Double Window Invoice Envelopes, Ruby Red, 4-1/8 x 9-1/8", 50/Pack~#|#~m002084693_sc7
Item: 1559044
Model: INVDW-18-50
Price is $36.89
Free delivery by Tue, Dec 23
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LUX 80lbs. 3 5/8" x 5 1/8" A1 RSVP, Invitation Envelopes W/Peel & Press, Wisteria Purple, 250/BX~#|#~m000081748_sc7
Item: 388541
Model: LUX-4865-106-25
Price is $69.89
Unit of measure 250/Box
Free delivery by Tue, Dec 23
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LUX 5 x 5 Square Envelopes, 500/Box, Ruby Red (8505-18-500)~#|#~m000081533_sc7
Item: 514984
Model: 8505-18-500
No reviews yet
Price is $162.60
Free delivery by Tue, Dec 23
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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 Fri, Dec 19
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JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Black Linen, 50/Pack (900906807I)~#|#~m003904584_sc7JAM Paper A9 Invitation Envelopes, 5.75 x 8.75, Black Linen, 50/Pack (900906807I)~#|#~m003904583_sc7
Item: 1588727
Model: 900906807I
No reviews yet
Price is $43.09
Unit of measure 50/Pack
Free delivery by Fri, Dec 19
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JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, Black, 100/Pack (356730544B)~#|#~m003757867_sc7JAM Paper #3 Coin Business Envelopes, 2.5 x 4.25, Black, 100/Pack (356730544B)~#|#~m003562849_sc7
Item: 2103473
Model: 356730544B
No reviews yet
Price is $39.29
Unit of measure 100/Pack
Free delivery by Fri, Dec 19
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JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Aqua Blue, 25/Pack (21520986)~#|#~m002934469_sc7JAM Paper #10 Policy Business Envelopes, 4 1/8" x 9 1/2", Aqua Blue, 25/Pack (21520986)~#|#~m003904907_sc7
Item: 363434
Model: 21520986
No reviews yet
Price is $14.89
Unit of measure 25/Pack
Delivery by Fri, Dec 19
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Midnight Black (F-4565-B-50)~#|#~m000081720_sc7
Item: 282383
Model: F-4565-B-50
No reviews yet
Price is $28.19
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, 10.0625 x 10.0625, Clear, 100/Pack (10X10CELLO)~#|#~m000068414_sc7
Item: 262892
Model: 10X10CELLO
No reviews yet
Price is $71.49
Unit of measure 100/Pack
Free delivery by Fri, Dec 19
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JAM Paper Self Seal #5 1/2 Coin Business Envelopes, 3 1/8" x 5 1/2", Red, 100/Pack (174147509D)~#|#~B5DF3A74-4017-4F1A-A5031156931A59F7_sc7
Item: 24557921
Model: 174147509D
No reviews yet
Price is $43.19
Unit of measure 100/Pack
Free delivery by Fri, Dec 19
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LUX Self Seal Booklet Envelope, 6" x 9", Smoke, 50/Pack (EX4820-22-50)~#|#~sp14807436_sc7
Item: 24261174
Model: EX4820-22-50
No reviews yet
Price is $25.79
Unit of measure 50/Pack
Delivery by Tue, Dec 23
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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.