Price is $14.99
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Price is $15.95
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Price is $28.39
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Price is $24.29
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Square Envelopes
Best Match
List view
Pick up and Delivery
Envelope Size
Envelope Type
Envelope Closure
Envelope Number
Envelope Material
Item # : 282931
Model # : F-4595-B-50
LUX® Size A9 envelope in midnight black color measuring 5 3/4" x 8 3/4" has a basis weight of 80 lbs and is sold as 50 per pack.
- Comes in Midnight Black, 80lb. Text Paper
- Dimensions: 5 3/4"L x 8 3/4"W
Price is $18.95
Unit of measure 50/Pack
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Over 30
Item # : 1227723
Model # : 921B1PU
JAM Paper® Purple Button & String Envelopes - Made of plastic material to provide durability
- Material: Plastic
- Color: Purple
Price is $32.39
Unit of measure 12/Pack Price per unit $2.70/Envelope
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Over 30
Item # : 513631
Model # : 4860-70W-250
LUX 70lb. Bright White #10 Square Flap Envelopes (4 1/8 x 9 1/2) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail.
- 250/box
- Bright white
Price is $55.29
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Item # : 282419
Model # : F-4590-B-50
Lux® Size A1 envelope in wisteria color is perfect for RSVP as well as announcements purposes and measures 3 5/8" x 5 1/8", is sold as 50 per pack.
- Midnight black
- Size: A10 (6" x 9 1/2")
Price is $29.49
Unit of measure 50/Pack
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Over 30
Item # : 24578545
Model # : LUX-8510-B-50
- Square Invitation Envelopes
- 5.25" x 5.25"
Price is $14.99
Unit of measure 50/Pack
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Item # : 282586
Model # : EX4875-27-50
Lux® Size A6 square flap envelope in avocado color is versatile and spacious to hold multitude cards or photos measuring 4 3/4" x 6 1/2", is sold as 50 per pack.
- A6 Invitation Envelopes (4 3/4 x 6 1/2) are perfect to use for sending invitations/greeting cards/RSVP's/thank you cards/gifts for birthdays/graduations/holidays
- Comes in Avocado, 70lb. Text Paper
Price is $15.95
Unit of measure 50/Pack
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Item # : 282684
Model # : LUX-4875-106-50
LUX® Size A6 square flap envelope with smooth finish in wisteria color measuring 4 3/4" x 6 1/2" is versatile and spacious to hold multitude cards or photos, is sold as 50 per pack.
- A6 Invitation Envelopes (4 3/4 x 6 1/2) are perfect to use for sending invitations/greeting cards/RSVP's/thank you cards/gifts for birthdays/graduations/holidays
- Comes in Wisteria, 80lb. Text Paper
Price is $28.39
Unit of measure 50/Pack
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Over 30
Item # : 282791
Model # : 5880-01-50
LUX® Size A7 envelope in natural color measuring 5 1/4" x 7 1/4" has basis weight of 70 lbs features a smooth finish, is sold as 50 per pack.
- A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos
- Comes in Natural, 70lb. Text Paper
Price is $24.29
Unit of measure 50/Pack
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Item # : 261318
Model # : 28415B
JAM Paper® 5 1/2" x 5 1/2" White squared envelope with 100 pieces is perfect for greeting cards and weddings making your invitation a sparkle.
- Size: 5 1/2" x 5 1/2"
- Closure: Gum
Price is $54.59
Unit of measure 100/Box
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Over 30
Item # : 261292
Model # : 154124B
- Size: 9" x 12"
- Closure: Gum
Price is $362.99
Unit of measure 1000/Carton
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Over 30
Item # : 262646
Model # : 44507B
JAM Paper® A7 Size natural white wove strathmore paper envelope in a carton of 1000 has dimension of 5 1/4" x 7 1/4" and is perfect for greeting cards, invitations, weddings or any announcements.
- Size: A7 (5 1/4" x 7 1/4")
- Closure: Gum
Price is $270.69
Unit of measure 1000/Carton
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Over 30
Item # : 387831
Model # : FE4275-15-1000
LUX® A6 Envelope measuring 4 3/4" x 6 1/2" in holiday red color is compatible with laser and inkjet while is the best collection for social, advertisement functions, sold as 1000 per box.
- A6 Invitation Envelopes (4 3/4 x 6 1/2) are perfect to use for sending invitations/greeting cards/RSVP's/thank you cards/gifts for birthdays/graduations/holidays
- Comes in Holiday Red, 60lb. Text Paper
Price is $119.89
Unit of measure 1000/Box
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Over 30
Item # : 514681
Model # : CCA7-500
LUX® Envelope in crystal clear color measuring A7 (5 1/4" x 7 1/4") features an elegant square flap and is perfect for social or announcement functions, sold as 500 per box.
- A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for party invites/thank you cards/wedding invites/announcements/5x7 photos
- Comes in Crystal Clear, 3.5 Mil Text Paper
Price is $122.29
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Item # : 24260765
Model # : EX1CO-27-250
LUX #1 Coin Envelopes (2 1/4 x 3 1/2) in Avocado are perfect for the HOLIDAYS, Weddings, Parties, Place Cards, small parts and more!
- Dimensions: 2.25"L x 3.5"W
- Comes in Avocado
Price is $49.49
Unit of measure 250/Pack
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Over 30
Item # : 282786
Model # : EX4880-11-50
LUX® Size A7 envelope in mandarin color measuring 5 1/4" x 7 1/4" has basis weight of 80 lbs features a smooth finish and is sold as 50 per pack.
- Mandarin
- Size: A7 (5 1/4" x 7 1/4")
Price is $25.79
Unit of measure 50/Pack
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Over 30
Item # : 534644
Model # : ST19868-CC
Secure binders and bulkier document mailings with this 50-pack of Staples Tyvek 16 x 12-inch side-opening EasyClose catalog envelopes.
- Tyvek Catalog envelope is perfect for catalogs, brochures, and bulky printed materials
- White Tyvek envelopes provide superior protection for mailing important materials or documents
Price is $183.09
Unit of measure 50/Box
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Item # : 262523
Model # : 191151
JAM Paper® A2 Size strathmore bright white wove cards and envelope in a pack of 25 is perfect for greeting cards, invitations or any other announcements and is 25% cotton.
- Size: A2 (4 3/8" x 5 3/4")
- Closure: Gum
Price is $11.19
Unit of measure 25/Pack
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Item # : 24260478
Model # : 4872-07-50
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) in Gold Metallic are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 4.25"L x 6.25"W
- Comes in Gold Metallic
Price is $17.99
Unit of measure 50/Pack
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Item # : 261699
Model # : LEBA667
- Size: A6 (4 3/4" x 6 1/2")
- Closure: Gum
Price is $13.29
Unit of measure 25/Pack
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Over 30
Item # : 947673
Model # : SLE12162WS
Expandable Ship-Lite Envelope is six times stronger than paper envelope.
- Made from white paper reinforced with mesh screen poly fibers
- Envelopes are moisture resistant
Price is $186.69
Unit of measure 100/Carton Price per unit $1.87/Case
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Item # : 1589498
Model # : 920B1PU
The JAM Paper index 7.5" x 5.5" button string closure letter booklet plastic envelope helps you manage and organize your receipts, tax papers and a number of other important documents.
- Product Type: Letter Booklet Envelope
- Purple plastic envelope
Price is $27.49
Unit of measure 12/Pack
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Over 30
Item # : 282915
Model # : CCA9-50
Lux® Size A9 envelope in crystal clear color has a dimension of 5 3/4" x 8 3/4" has a basis weight of 3.5 mil, is sold as 50 per pack.
- A9 Invitation Envelopes (5 3/4 x 8 3/4) are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Crystal Clear, 3.5 Mil Text Paper
Price is $20.89
Unit of measure 50/Pack
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Over 30
Item # : 24578527
Model # : 8555-GB-50
- Square Envelopes
- 7.5" x 7.5"
Price is $19.99
Unit of measure 50/Pack
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Over 30
Item # : 262771
Model # : 3243667
JAM Paper® 3 7/8" x 8 1/8" White with gold foil lined envelope in a pack of 25 is perfect for greeting cards, invitations, weddings or any announcements and has square gummed flap.
- White with gold foil
- Size: 3 7/8" x 8 1/8"
Price is $10.59
Unit of measure 25/Pack
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Over 30
Item # : 24557987
Model # : 260147509I
- Color: Black
- Size: 9 x 12 inches
Price is $44.09
Unit of measure 50/Pack
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Over 30
Item # : 282941
Model # : 5395-08-50
LUX® Size A9 envelope in quartz metallic color measuring 5 3/4" x 8 3/4" has a basis weight of 80 lbs and is sold as 50 per pack.
- Quartz metallic
- Size: A9 (5 3/4" x 8 3/4")
Price is $33.89
Unit of measure 50/Pack
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Over 30
Item # : 281924
Model # : EX4860-26-50
Lux® Size 10 square flap envelope in garnet color is ideal for different types of personal or business related uses and measures 4 1/8" x 9 1/2".
- #10 Square Flap Envelopes are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
- Comes in Garnet, 80lb. Text Paper
Price is $43.09
Unit of measure 50/Pack
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Over 30
Item # : 24295038
Model # : 88129I
Deliver in style with Jam Paper Open End Catalog Envelopes
- Orange open end catalog envelopes
- Size: 6 x 9 inches
Price is $30.89
Unit of measure 50/Pack
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Over 30
Item # : 385926
Model # : 87733-500
LUX Midnight black open end envelope measuring 10" x 13" has a paper weight of 80 lbs. and is ideal for sending flat, bulky materials or many small items like coins, catalogs and jumbo cards, sold as 500 per box.
- 10 x 13 Open End Envelopes perfect for organizing documents/distributing promotional materials/marketing materials/mailings/filings
- Comes in Midnight Black
Price is $154.80
Unit of measure 500/Box
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Over 30
Item # : 514811
Model # : 8515-NPC-250
5 1/2"x5 1/2" natural square envelopes use as gratuity envelopes, gift tags, dressing up floral arrangements or for various scrapbooking projects as sold as 250/Box.
- 5 1/2 x 5 1/2 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
- Comes in Natural - 100% Recycled, 80lb. Text Paper
Price is $70.99
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Over 30
Item # : 517513
Model # : LUX-4865-113500
LUX® Envelope in seafoam color measuring A1 (3 5/8" x 5 1/8") is perfect for use in dainty announcement, sold as 500 per box.
- A1 Invitation Envelopes (3 5/8 x 5 1/8) are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Seafoam, 80lb. Text Paper
Price is $95.89
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Over 30
Item # : 384650
Model # : 4865-GB-1000
LUX® A1 Envelope in grocery bag color measuring 3 5/8" x 5 1/8" is perfect for RSVP and occasions calling for a dainty announcements, sold as 1000 per pack.
- A1 Invitation Envelopes (3 5/8 x 5 1/8) are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Grocery Bag, 70lb. Text Paper
Price is $114.20
Unit of measure 1000/Box
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Over 30
Item # : 23995473
Model # : LUX-10APW-10350
LUX #10 All Purpose Window Envelopes(4 1/8 x 9 1/2) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail
- Comes in 80lb. Navy
- Dimensions: 4.125"L x 9.5"W
Price is $20.09
Unit of measure 50/Pack
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Over 30
Item # : 282827
Model # : EX4880-22-50
LUX® Size A7 envelope in smoke color measuring 5 1/4" x 7 1/4" has basis weight of 80 lbs features a smooth finish and is sold as 50 per pack.
- Smoke
- Size: A7 (5 1/4" x 7 1/4")
Price is $25.39
Unit of measure 50/Pack
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Over 30
Item # : 2329395
Model # : 353027837I
- #1 Coin Envelope
- Made with bright purple paper
Price is $16.69
Unit of measure 50/Pack
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Over 30
Item # : 282186
Model # : EX8535-13-50
LUX 6 1/2 x 6 1/2 Square Envelopes are perfect for invitations, announcements, greeting cards and special occasions, square envelopes create a unique look!
- 6 1/2 x 6 1/2 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
- Comes in Baby Blue, 80lb. Text Paper
Price is $25.49
Unit of measure 50/Pack
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Over 30
Item # : 263703
Model # : 31512738
JAM Paper® 9" x 12" Baby pink envelopes in a pack of 25 is perfect for greeting cards, invitations, weddings and promotional material which is created from either 30% or 100% post consumer paper.
- Size: 9" x 12"
- Closure: Gum
Price is $25.39
Unit of measure 25/Pack
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Over 30
Item # : 513844
Model # : FLSL4872-02-500
LUX® Envelope in silver with black LUX lining measuring A4 (4 1/4" x 6 1/4") is the best collection for social and invitation purpose, sold as 500 per box.
- A4 Foil Lined Invitation Envelopes (4 1/4 x 6 1/4) are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Silver w/Black LUX Lining, 80lb. Text Paper
Price is $205.31
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Over 30
Item # : 24260244
Model # : 318-500
LUX 11 1/2 x 14 1/2 Open End Envelopes in 28lb. Brown Kraft are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 11.5"L x 14.5"W
- Comes in 28lb. Brown Kraft
Price is $155.59
Unit of measure 500/Pack
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Over 30
Item # : 24260889
Model # : EX1644-14-50
LUX 6 x 9 Open End Envelopes in Candy Pink are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 6"L x 9"W
- Comes in Candy Pink
Price is $24.95
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.
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.