Square Envelopes
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Envelope Type
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Envelope Number
Envelope Material
Item # : 24260318
Model # : 4870-NLI-50
LUX A2 (4 3/8 x 5 3/4) - Natural Linen in Natural Linen are perfect for invitations, greeting cards, thank you cards, and is ideal for letters as it's designed to fit quarter-folded sheets of paper.
- Dimensions: 4.375"L x 5.75"W
- Comes in Natural Linen
Price is $15.79
Unit of measure 50/Pack
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Over 30
Item # : 262546
Model # : 191223
JAM Paper® A10 size strathmore natural white wove envelope in a pack of 25 is perfect for greeting cards, invitations or any other announcements and is made from 30% recycled paper.
- Paper weight: 32 lbs.
- Strathmore wove & laid envelopes are 25% cotton
Price is $11.49
Unit of measure 25/Pack
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Over 30
Item # : 24260955
Model # : LUX-7CO-103-50
LUX #7 Coin Envelopes (3 1/2 x 6 1/2) in Navy are perfect for the HOLIDAYS, Weddings, Parties, Place Cards, small parts and more!
- Dimensions: 3.5"L x 6.5"W
- Comes in Navy
Price is $19.99
Unit of measure 50/Pack
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Item # : 261309
Model # : 3992320
JAM Paper® 10 1/2" x 10 1/2" White squared envelope with 25 pieces is perfect for greeting cards and weddings making your invitation a sparkle.
- Size: 10 1/2" x 10 1/2"
- Closure: Gum
Price is $33.09
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 # : 263922
Model # : 4231
JAM Paper® Regular square envelope of dimension 8.5" x 8.5" in white color with gummed closure is perfect for greeting cards, invitations, weddings or any announcement.
- Size: 8 1/2" x 8 1/2"
- Closure: Gum
Price is $25.19
Unit of measure 25/Pack
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Item # : 282379
Model # : 910003121/06827
Lux® Size A1 envelope in lilac color is best suited for RSVP and also for announcements and measures 3 5/8" x 5 1/8", is sold as 50 per pack.
- Lilac
- Size: A1 (3 5/8" x 5 1/8")
Price is $21.49
Unit of measure 50/Pack
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Item # : 384775
Model # : 4875-GB-1000
LUX® A6 Envelope in grocery bag color of size 4 3/4" x 6 1/2" is perfect for sending snapshots and suitable for social as well as announcement usage, 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 Grocery Bag, 70lb. Text Paper
Price is $135.39
Unit of measure 1000/Box
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Item # : 1589523
Model # : 80278I
The JAM Paper A7 violet recycled envelope features a closure that can be easily opened and closed for your convenience.
- Violet recycled envelope
- Blank interior for personalized message
Price is $19.99
Unit of measure 50/Pack
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Item # : 1277801
Model # : LUX-1590-101-1M
LUX Open End Window Envelopes - Includes a flap on the shorter side
- 9 x 12 Open End Window Envelopes are perfect for sending documents/catalogs/direct mail/promotional material/brochures
- Comes in Limelight, 80lb. Text Paper
Price is $405.89
Unit of measure 1000/Box
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Item # : 24260623
Model # : 7486-W2-1000
LUX W-2 / 1099 Envelopes (5 3/4 x 8 7/8) in 24lb. White w/ Security Tint are perfect for mailing Checks, Invoices, Letterhead, Personal Letters, Statements, Direct Mail and more!
- Dimensions: 5 3/4"L x 8 7/8"W
- Comes in 24lb. White w/ Security Tint
Price is $192.59
Unit of measure 1000/Pack
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Item # : 282548
Model # : 4872-R-50
Lux® A4 envelope in holiday red color with a basis weight of 60 lbs measures 4 1/4" x 6 1/4" and is perfect for offering the perfect fit for 4" x 6" photos, is sold as 50 per pack.
- A4 Invitation Envelopes (4 1/4 x 6 1/4) are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Holiday Red, 60lb. Text Paper
Price is $22.79
Unit of measure 50/Pack
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Item # : 282546
Model # : LUX-4872-26-50
Lux® Size A4 envelope in garnet color has a basis weight of 80 lbs and is ideal for offering the perfect fit for 4" x 6" photos and measures 4 1/4" x 6 1/4", is sold as 50 per pack.
- A4 Invitation Envelopes (4 1/4 x 6 1/4) are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Garnet, 80lb. Text Paper
Price is $22.59
Unit of measure 50/Pack
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Item # : 282900
Model # : 90417-50
LUX A9 Invitation Envelopes (5-3/4" L x 8-3/4" W) are perfect for Invitations, Weddings, Announcements, Photos, and so much more!
- A9 Invitation envelopes (5-3/4" L x 8-3/4" W) are perfect for party invites, thank you cards, wedding invites, announcements
- Comes in 24 lb. Bright white, 24 lb. Text paper
Price is $44.09
Unit of measure 50/Pack
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Item # : 912032
Model # : QUA63576
Contain and send documents with this 100-pack of Quality Park string-and-button brightly colored yellow one-sided standard-style interdepartmental envelopes.
- Interdepartmental envelopes are easy to spot as being confidential
- Envelope size: 10"H x 13W"
Price is $129.09
Unit of measure 100/Carton
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Item # : 1029952
Model # : 8504-01-50
LUX 70lb. Natural 4 x 4 Square Envelopes are perfect for wedding invitations, RSVP cards, save the dates, or any other message.
- Square envelopes perfect for announcements/weddings/greeting cards/invitations
- Comes in Natural, 70lb. Text Paper
Price is $30.89
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Item # : 385459
Model # : 61549-1000
Keep sensitive information confidential with this box of 1,000 LUX 24-pound security tint white #9 window envelopes.
- US #9 business envelopes are suitable for all your mailing needs
- Made from white 24 lb. paper for durability
Price is $107.89
Unit of measure 1000/Box
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Item # : 24260828
Model # : 4872-M08-50
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) in Champagne Metallic are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 4.25"L x 6.25"W
- Comes in Champagne Metallic
Price is $16.69
Unit of measure 50/Pack
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Item # : 388186
Model # : SH4280-04-250
LUX® A7 Envelope in pastel green color measuring 5 1/4" x 7 1/4" is compatible with laser and inkjet while is the best collection for social, announcement functions, sold as 250 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 Pastel Green, 60lb. Text Paper
Price is $56.89
Unit of measure 250/Box
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Item # : 1277789
Model # : 61112-70W-500
LUX White Open End Envelopes - Envelopes with a small window to position the address through it
- 9 x 12 Open End Window Envelopes are perfect for sending documents/catalogs/direct mail/promotional material/brochures
- Comes in White, 70lb. Text Paper
Price is $294.39
Unit of measure 500/Box
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Item # : 282387
Model # : LUX-4865-103-50
Lux® Size A1 envelope in navy color is best suited for RSVP as well as announcements purposes and measures 3 5/8" x 5 1/8", is sold as 50 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 Navy, 80lb. Text Paper
Price is $13.95
Unit of measure 50/Pack
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Item # : 2633096
Model # : 4101C
JAM Paper open end envelopes are great for keeping and sending important papers and documents.
- Made from smooth 24lb paper, includes gummed flap closure
- Perfect for business mailing, storage, and organizing documents
Price is $33.09
Unit of measure 100/Pack
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Item # : 517493
Model # : LUX-4860-113500
LUX 80lb. Seafoam #10 Square Flap Envelopes (4 1/8 x 9 1/2) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail.
- #10 Square Flap Envelopes are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
- Comes in Seafoam, 80lb. Text Paper
Price is $120.19
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Item # : 386613
Model # : EX4880-12-250
LUX® A7 Envelope in sunflower color of size 5 1/4" x 7 1/4" is multi purpose by nature making it ideal collection for social, advertisement functions, sold as 250 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 Sunflower, 80lb. Text Paper
Price is $91.99
Unit of measure 250/Box
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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 # : 24261304
Model # : LUX-7CO-101-50
LUX #7 Coin Envelopes (3 1/2 x 6 1/2) in Limelight are perfect for the HOLIDAYS, Weddings, Parties, Place Cards, small parts and more!
- Dimensions: 3.5"L x 6.5"W
- Comes in Limelight
Price is $20.59
Unit of measure 50/Pack
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Item # : 24260523
Model # : 11874-50
LUX 6 x 9 Booklet Envelopes in 24lb. Bright White are perfect for mailing Checks, Invoices, Letterhead, Personal Letters, Statements, Direct Mail and more!
- Dimensions: 6"L x 9"W
- Comes in 24lb. Bright White
Price is $13.95
Unit of measure 50/Pack
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Item # : 262216
Model # : PACV527
JAM Paper® 6 1/2" x 6 1/2" Primary blue translucent envelope in a pack of 25 has a see-through attribute which serves as a creative invitation or announcement detail and is made from quality vellum paper.
- Size: 6 1/2" x 6 1/2"
- Closure: Gum
Price is $30.99
Unit of measure 25/Pack
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Item # : 386663
Model # : EX4880-22-1000
LUX® A7 Envelope in smoke color of size 5 1/4" x 7 1/4" is multi purpose by nature making it ideal collection for social, advertisement functions, sold as 1000 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 Smoke, 80lb. Text Paper
Price is $182.92
Unit of measure 1000/Box
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Item # : 24260745
Model # : 8510-01-50
LUX 5 1/4 x 5 1/4 Square Envelopes in Natural are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 5.25"L x 5.25"W
- Comes in Natural
Price is $13.29
Unit of measure 50/Pack
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Item # : 263957
Model # : 34926
JAM Paper® A6 Size natural recycled parchment paper envelope is perfect for greeting cards, invitations, weddings or any announcements and comes in a vast range of sizes/colors.
- Natural
- Size: A6 (4 3/4" x 6 1/2")
Price is $10.59
Unit of measure 25/Pack
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Item # : 261536
Model # : 6314842
JAM® 100% Recycled brown kraft envelopes in a pack of 25 and are perfect for greeting cards, invitations, weddings or any announcements.
- Size: #10 (4 1/8" x 9 1/2")
- Closure: Gum
Price is $19.99
Unit of measure 25/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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Related Searches
Trending now
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.