Square Envelopes

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 Mon, Oct 05
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LUX Slimline Invitation Envelopes (3 7/8 x 8 7/8) 1000/Box, 80lb. Bright White (72973-80W-1000)~#|#~m001149707_sc7
Item: 1029957
Model: 72973-80W-1000
No reviews yet
Price is $132.99
Free delivery by Mon, Oct 05
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Lux Full Face #10 Window Envelopes Wasabi 6 x 9 inch 250/Pack~#|#~m002084639_sc7
Item: 1559269
Model: FFW-69-L22-250
No reviews yet
Price is $130.69
Free delivery by Mon, Oct 05
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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 Wed, Sep 30
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JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Natural White Linen, 50/Pack (900789414I)~#|#~m007159215_sc7JAM Paper A10 Strathmore Invitation Envelopes, 6 x 9.5, Natural White Linen, 50/Pack (900789414I)~#|#~m007159214_sc7
Item: 1588776
Model: 900789414I
No reviews yet
Price is $25.29
Unit of measure 50/Pack
Delivery by Wed, Sep 30
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JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Black Linen, 50/Pack (V01205I)~#|#~m003905207_sc7JAM Paper A7 Invitation Envelopes, 5.25 x 7.25, Black Linen, 50/Pack (V01205I)~#|#~m003905206_sc7
Item: 1589094
Model: V01205I
Price is $27.19
Unit of measure 50/Pack
Delivery by Wed, Sep 30
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JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Gold, 50/Pack (GCST658I)~#|#~m003905140_sc7JAM Paper A6 Metallic Invitation Envelopes, 4.75 x 6.5, Stardream Gold, 50/Pack (GCST658I)~#|#~m003905139_sc7
Item: 1588878
Model: GCST658I
No reviews yet
Price is $39.99
Unit of measure 50/Pack
Free delivery by Wed, Sep 30
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JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Black Linen with Silver Foil, 50/Pack (3243688I)~#|#~m002934260_sc7JAM Paper A7 Foil Lined Invitation Envelopes, 5.25 x 7.25, Black Linen with Silver Foil, 50/Pack (3243688I)~#|#~m002934253_sc7
Item: 1589218
Model: 3243688I
No reviews yet
Price is $39.09
Unit of measure 50/Pack
Free delivery by Wed, Sep 30
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LUX Kraft Open End Envelopes with Security Tint, 9" x 12", White, 500/Pack (WS-4894-ST-500)~#|#~m004063773_sc7
Item: 2146103
Model: WS-4894-ST-500
No reviews yet
Price is $253.39
Unit of measure 500/Pack
Free delivery by Mon, Oct 05
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LUX Self Seal #5 1/2 Coin Envelopes, 3 1/8" x 5 1/2", White, 50/Pack (512CO-28W-50)~#|#~48206F59-BFB5-4427-935A352B2F5791AC_sc7LUX Self Seal #5 1/2 Coin Envelopes, 3 1/8" x 5 1/2", White, 50/Pack (512CO-28W-50)~#|#~1DDF1FB2-0E3D-4E16-BCCBA7A7FCD85390_sc7
Item: 2146323
Model: 512CO-28W-50
No reviews yet
Price is $30.29
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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JAM Paper Cellophane Envelope with Peel & Seal Closure, A2, 4.625 x 5.875, Clear, 100/Pack (A2CELLO)~#|#~m003574763_sc7
Item: 262893
Model: A2CELLO
Price is $33.99
Unit of measure 100/Pack
Delivery by Wed, Sep 30
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JAM Paper Cellophane Envelope with Self-Adhesive Closure, #12 Policy, 4.4375 x 12.25, Clear, 1000/Carton (NUM12CELLOB)~#|#~m000068413_sc7
Item: 262922
Model: NUM12CELLOB
No reviews yet
Price is $261.99
Unit of measure 1000/Carton
Free delivery by Wed, Sep 30
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LUX 10" x 13" 80lbs. Square Flap Open End Envelopes, Black Linen, 50/Pack (4897-BLI-50)~#|#~51007EEE-AD1B-4B60-955273B4E684D72B_sc7
Item: 282032
Model: 4897-BLI-50
No reviews yet
Price is $32.19
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, 70lb. Bright White (10902-50)~#|#~m000081469_sc7
Item: 282100
Model: 10902-50
Price is $26.79
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Avocado (EX8515-27-50)~#|#~m000081470_sc7
Item: 282101
Model: EX8515-27-50
No reviews yet
Price is $20.69
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Clear Translucent (8515-50-50)~#|#~m000081479_sc7
Item: 282110
Model: 8515-50-50
No reviews yet
Price is $40.99
Unit of measure 50/Pack
Free delivery by Mon, Oct 05
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LUX 5 1/2 x 5 1/2 Square Envelopes, 50/Box, Magenta (EX8515-10-50)~#|#~m000081487_sc7
Item: 282118
Model: EX8515-10-50
No reviews yet
Price is $22.79
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX 6 1/2 x 6 1/2 Square Envelopes, 50/Box, Holiday Green (8535-12-50)~#|#~m000081521_sc7
Item: 282191
Model: 8535-12-50
No reviews yet
Price is $14.95
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) 50/Box, Gold Metallic (5365-07-50)~#|#~m000081706_sc7
Item: 282368
Model: 5365-07-50
Price is $24.39
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX A2 (4 3/8 x 5 3/4) 50/Box, Black Linen (4870-BLI-50)~#|#~m000081688_sc7
Item: 282435
Model: 4870-BLI-50
No reviews yet
Price is $17.59
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX A6 Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Citrus (FE4275-20-50)~#|#~m000081904_sc7
Item: 282599
Model: FE4275-20-50
No reviews yet
Price is $19.29
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX A6 Foil Lined Invitation Envelopes (4 3/4 x 6 1/2) 50/Box, Natural w/Gold LUX Lining (FLNT4875-04-50)~#|#~m000081933_sc7
Item: 282636
Model: FLNT4875-04-50
No reviews yet
Price is $35.09
Unit of measure 50/Pack
Free delivery by Mon, Oct 05
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LUX 5 1/4" x 7 1/4" 3.5 mil A7 Invitation Envelopes W/Peel & Seal, Crystal Clear, 50/Pack~#|#~m000081564_sc7
Item: 282752
Model: CCA7-50
Price is $16.19
Unit of measure 50/Pack
Delivery by Mon, Oct 05
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LUX A2 (4 3/8 x 5 3/4) 250/Box, Natural Linen (4870-NLI-250)~#|#~m000161363_sc7
Item: 384723
Model: 4870-NLI-250
Price is $47.79
Unit of measure 250/Box
Free delivery by Mon, Oct 05
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LUX 80lbs. 4 1/8" x 9 1/2" #10 Square Flap Envelopes, Navy Blue, 250/BX~#|#~m000161287_sc7
Item: 388493
Model: LUX-4860-103-25
No reviews yet
Price is $58.49
Unit of measure 250/Box
Free delivery by Mon, Oct 05
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LUX 70lb 4 1/8"x9 1/2" Square Flap Linen Envelopes, White, 500/BX~#|#~m000161371_sc7
Item: 513618
Model: 4860-WLI-500
No reviews yet
Price is $110.09
Free delivery by Mon, Oct 05
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LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) 250/Box, Baby Blue (LUX-4872-13-250)~#|#~m000081851_sc7
Item: 513685
Model: LUX-4872-13-250
No reviews yet
Price is $64.79
Free delivery by Mon, Oct 05
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Clear View Plastic Self Seal Catalog Envelope 10" x 13", Clear, 500/Carton (CV1013)~#|#~sp144376457_sc7Clear View Plastic Self Seal Catalog Envelope 10" x 13", Clear, 500/Carton (CV1013)~#|#~9A2B7ABF-EC17-492B-AF8C66793D0964BF_sc7
Item: 949135
Model: CV1013
Price is $300.79
Unit of measure 500/Carton Price per unit $0.60/Envelope
Free delivery by Fri, Oct 02
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80 lb 5 3/4" x 5 3/4" Peel & Press Square Linen Envelopes, Natural, 50/Pack~#|#~m001149703_sc7
Item: 1030026
Model: 8520-NLI-50
No reviews yet
Price is $22.79
Delivery by Mon, Oct 05
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JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (25048I)~#|#~m002934135_sc7JAM Paper Open End #10 Currency Envelope, 4 1/8" x 9 1/2", Red, 50/Pack (25048I)~#|#~m002934134_sc7
Item: 1588622
Model: 25048I
No reviews yet
Price is $22.99
Unit of measure 50/Pack
Delivery by Wed, Sep 30
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JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 50/Pack (439911145I)~#|#~sp113368812_sc7JAM Paper 4.5 x 4.5 Square Invitation Envelopes, White, 50/Pack (439911145I)~#|#~sp113368811_sc7
Item: 1588514
Model: 439911145I
Price is $20.49
Unit of measure 50/Pack
Delivery by Wed, Sep 30
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JAM PAPER Self Seal #5 Coin Business Envelopes, 2 7/8" x 5 1/4", White, 50/Pack (356838555I)~#|#~6C407227-A6C6-4856-85A9AA1A7DD376F5_sc7
Item: 24557939
Model: 356838555I
No reviews yet
Price is $14.99
Unit of measure 50/Pack
Delivery by Wed, Sep 30
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JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Seafoam Green, 250/Pack (8510-113-250)~#|#~sp225303060_sc7JAM Paper Self Seal Invitation Envelopes, 5 1/4" x 5 1/4", Seafoam Green, 250/Pack (8510-113-250)~#|#~sp225303059_sc7
Item: 24578438
Model: 8510-113-250
No reviews yet
Price is $39.49
Unit of measure 250/Pack
Free delivery by Wed, Sep 30
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JAM Paper A1 Self Seal Envelopes, 3 5/8" x 5 1/8", Bright Blue, 50/Pack (4865-13-50)~#|#~sp225302946_sc7JAM Paper A1 Self Seal Envelopes, 3 5/8" x 5 1/8", Bright Blue, 50/Pack (4865-13-50)~#|#~sp225302945_sc7
Item: 24578405
Model: 4865-13-50
No reviews yet
Price is $16.19
Unit of measure 50/Pack
Delivery by Wed, Sep 30
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JAM Paper 7 1/2 x 7 1/2 Square Envelopes, Smoke Gray, 250 Pack (EX8555-22-250)~#|#~sp228873507_sc7
Item: 24578452
Model: EX8555-22-250
No reviews yet
Price is $46.59
Unit of measure 250/Pack
Free delivery by Wed, Sep 30
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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
JAM Paper A6 Invitation Envelopes, 4.75 x 6.5, Baby Blue, 50/Pack (155626I) is Out of stock
Item: 1588921
Model: 155626I
No reviews yet
Price is $23.29
Unit of measure 50/Pack
JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, Bulk 250/Box (155438H)~#|#~sp131391007_sc7JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, Bulk 250/Box (155438H)~#|#~sp131391076_sc7
JAM Paper 4Bar A1 Colored Invitation Envelopes, 3.625 x 5.125, Ultra Lime Green, Bulk 250/Box (155438H) is Out of stock
Item: 1589398
Model: 155438H
No reviews yet
Price is $64.99
Unit of measure 250/Box
LUX A2 (4 3/8 x 5 3/4) 250/Box, Grocery Bag (4870-GB-250)~#|#~m000081789_sc7
LUX A2 (4 3/8 x 5 3/4) 250/Box, Grocery Bag (4870-GB-250) is Out of stock
Item: 384699
Model: 4870-GB-250
Price is $53.29
Unit of measure 250/Box
JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566184_sc7JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I)~#|#~sp118566189_sc7
JAM Paper 11.5" x 11.5" Large Square Invitation Envelopes, White, 50/Pack (3992321I) is Out of stock
Item: 1588470
Model: 3992321I
No reviews yet
Price is $72.39
Unit of measure 50/Pack
JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I)~#|#~m003904710_sc7JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I)~#|#~m003904709_sc7
JAM Paper A8 Invitation Envelopes, 5.5 x 8.125, Baby Blue, 50/Pack (155630I) is Out of stock
Item: 1589138
Model: 155630I
No reviews yet
Price is $25.29
Unit of measure 50/Pack

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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.