Square Envelopes
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Envelope Size
Envelope Type
Envelope Closure
Envelope Number
Envelope Material
Item # : 2147471
Model # : INVDW-102-50
LUX Double Window Invoice Envelopes (4 1/8 x 9 1/8) are perfect for sending letters, invoices or statements.
- Double Window Invoice Envelopes (4 1/8 x 9 1/8) are the perfect envelope for all Quickbooks invoicing/accounting mailings
- Comes in Pool, 80lb. Text Paper
Price is $26.79
Unit of measure 50/Pack
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Item # : 23996909
Model # : WS-4752-50
LUX 7 x 10 Open End - 24lb. Brown Kraft perfect for organizing documents, distributing promotional and marketing materials, mailing, filing and much more!
- Comes in 24lb. Brown Kraft
- Dimensions: 7"L x 10"W
Price is $20.89
Unit of measure 50/Pack
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Item # : 263523
Model # : 920V0BU
JAM Paper® Plastic Envelopes have 12 document holders that are the perfect way to organize index cards and other small papers
- Color: Blue
- Size: 5.5 x 7.5 inches
Price is $27.49
Unit of measure 12/Pack Price per unit $2.29/Envelope
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Item # : 282663
Model # : EX4875-22-50
LUX® Size A6 square flap envelope with smooth finish in smoke 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 Smoke, 80lb. Text Paper
Price is $21.49
Unit of measure 50/Pack
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Item # : 1589978
Model # : LEKR850H
The JAM Paper A10 brown kraft paper bag recycled envelope is great to use for announcements and different kind of invitations.
- Brown Kraft paper bag recycled envelope
- Blank interior for personalized message
Price is $113.39
Unit of measure 250/Box
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Item # : 262514
Model # : 900789414
JAM Paper® A10 Strathmore natural white linen envelope in a pack of 25 is perfect for wedding, birthday, holiday or other event and is made from 30% recycled paper.
- Size: A10 (6" x 9 1/2")
- Closure: Gum
Price is $13.19
Unit of measure 25/Pack
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Item # : 1227727
Model # : 920B1LI
JAM Paper® Plastic Button & String Envelope 5.25" x 7.5" - Made of plastic material to provide durability
- Material: Plastic
- Color: Lilac Purple
Price is $39.79
Unit of measure 12/Pack Price per unit $3.32/Envelope
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Item # : 1588624
Model # : 67161I
The JAM Paper #10 (4.13" x 9.5") recycled envelope makes a great option for sending out hand-written letters to your loved ones.
- Product Type: Recycled Business Envelope
- Red recycled paper envelope
Price is $16.59
Unit of measure 50/Pack
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Item # : 1589215
Model # : 3243663I
The JAM Paper A7 white with gold foil lined envelope features a closure that can be easily opened and closed for your convenience.
- White with gold foil lined envelope
- Blank interior for personalized message
Price is $26.49
Unit of measure 50/Pack
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Item # : 384601
Model # : 4860-NPC-250
LUX® Size 10 Square flap envelope in natural color measuring 4 1/8 " x 9 1/2" forms a perfect choice for personal or corporate business use and is sold as 250 per box.
- #10 Square Flap Envelopes are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
- Comes in Natural - 100% Recycled, 80lb. Text Paper
Price is $99.99
Unit of measure 250/Box
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Item # : 1590445
Model # : 15864I
The JAM Paper #10 (4.13" x 9.5") recycled envelope makes a great option for distributing official materials, sending mails or filing important papers.
- Product Type: Recycled Business Envelope
- Violet recycled paper envelope
Price is $19.99
Unit of measure 50/Pack
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Item # : 282101
Model # : EX8515-27-50
Lux® Square envelope in avocado color measuring 5 1/2" x 5 1/2" has a paper weight of 70 lbs and is suited for greeting cards, weddings or any other advertisements.
- 5 1/2 x 5 1/2 Square are perfect for invitations/announcements/greeting cards/special occasions
- Comes in Avocado, 70lb. Text Paper
Price is $20.16
Unit of measure 50/Pack
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Item # : 24260230
Model # : LUX-4899-106-50
LUX 9 x 12 Booklet Envelopes in Wisteria are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 9"L x 12"W
- Comes in Wisteria
Price is $23.49
Unit of measure 50/Pack
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Item # : 388588
Model # : LUX-4870-106-25
LUX® A2 Envelope in wisteria color measuring 4 3/8" x 5 3/4" is ideal for invitations, announcement, greeting cards, snapshots, notecards and is sold as 250 per box.
- Wisteria
- Size: A2 (4 3/8" x 5 3/4")
Price is $68.09
Unit of measure 250/Box
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Item # : 262180
Model # : PACV853
JAM Paper® A10 leaf green translucent envelope of 25 per pack is made from natural vellum paper and pure cellulose fibers which is perfect for greeting cards, invitations, weddings or any announcement.
- Size: A10 (6" x 9 1/2")
- Closure: Gum
Price is $36.39
Unit of measure 25/Pack
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Item # : 282831
Model # : EX4880-12-50
LUX® Size A7 envelope in sunflower 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 Sunflower, 80lb. Text Paper
Price is $25.39
Unit of measure 50/Pack
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Item # : 24260702
Model # : 4872-M07-50
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) in Blonde Metallic are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 4.25"L x 6.25"W
- Comes in Blonde Metallic
Price is $15.79
Unit of measure 50/Pack
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Item # : 2444631
Model # : 69BS-28W-250
LUX 6 x 9 Button & String Envelopes are attractive, strong, and perfect for mailing, filing, or handing out.
- 6 x 9 Button & String Envelopes are perfect for sending documents/catalogs/direct mail/promotional material/brochures
- Comes in 28lb. White, 28lb. Text Paper
Price is $219.68
Unit of measure 250/Pack
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Item # : 262757
Model # : 3243655
JAM Paper® A6 Size white with red foil lined envelope in a pack of 25 is perfect for greeting cards, invitations, weddings or any announcements and has square gummed flap.
- Paper weight: 24 lbs.
- Luminosity of these envelopes will make an impression on any recipient
Price is $13.89
Unit of measure 25/Pack
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Item # : 24261005
Model # : 8555-03-50
LUX 7 1/2 x 7 1/2 Square Envelopes in Natural are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 7.5"L x 7.5"W
- Comes in Natural
Price is $22.69
Unit of measure 50/Pack
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Item # : 23996057
Model # : LUX-4880-39-250
LUX A7 Invitation Envelopes (5 1/4 x 7 1/4) are perfect for Invitations, Weddings, Announcements, Photos, and so much more!
- Comes in Blush
- Dimensions: 5.25"L x 7.25"W
Price is $78.90
Unit of measure 250/Pack
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Item # : 261312
Model # : 3992323
Ideal for everyday business, JAM Paper White Square Invitation Envelopes provide versatility and ease for all your mailing needs.
- Smooth paper finish for a sleek appearance
- Straight-flap gum closure helps keep contents secure
Price is $42.49
Unit of measure 25/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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Item # : 24260861
Model # : LUX-4895-L05-50
LUX A9 Invitation Envelopes (5 3/4 x 8 3/4) in Lilac are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 5.75"L x 8.75"W
- Comes in Lilac
Price is $27.69
Unit of measure 50/Pack
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Item # : 261113
Model # : 4156910
JAM Paper® Size 12 Open end policy brite hue violet recycled paper envelope in a pack of 25 has dimension of 4 3/4" x 11" and is perfect for greeting cards, invitations or other announcements.
- Size: #12 Policy (4 3/4" x 11")
- Closure: Gum
Price is $15.49
Unit of measure 25/Pack
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Trending now
13% off of Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST50312-CC)
Price is $24.99, Regular price was $28.79, You save 13%
Unit of measure 500/Box Price per unit $0.05/Envelope
Next-Day Delivery by tomorrow
1-hr pickup
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15% off of Glad 13 Gallon Trash Bag, 8.5"x8.5", Low Density, .72 mil, White, 100 Bags/Box (CLO 78526)
Price is $16.39, Regular price was $19.39, You save 15%
Unit of measure 100/Box Price per unit $0.16/bag
Next-Day Delivery by tomorrow
1-hr pickup
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13% off of Staples Notepads, 8.5" x 11.75", Wide Ruled, White, 50 Sheets/Pad, Dozen (ST57339M/57339)
Price is $16.99, Regular price was $19.59, You save 13%
Unit of measure Dozen Price per unit $1.42/Pad
Next-Day Delivery by tomorrow
1-hr pickup
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13% off of Staples QuickStrip EasyClose Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50308-CC)
Price is $7.99, Regular price was $9.29, You save 13%
Unit of measure 100/Box Price per unit $0.08/Envelope
Next-Day Delivery by tomorrow
1-hr pickup
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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.