Square Envelopes
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Envelope Size
Envelope Type
Envelope Closure
Envelope Number
Envelope Material
Item # : 2146394
Model # : 28460-MI-250
LUX #10 Window (4 1/8 x 9 1/2) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail.
- #10 Window (4 1/8 x 9 1/2) are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
- Comes in 24lb. White, Machine Insertable, 24lb. Text Paper
Price is $55.29
Unit of measure 250/Pack
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Item # : 282431
Model # : EX4870-27-50
Lux® Size A2 avocado colored envelope measuring 4 3/8" x 5 3/4" is best suited for invitations, advertisements, greeting cards, snapshots, notecards and is sold as 50 per pack.
- A2 (4 3/8 x 5 3/4) - Avocado are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Avocado, 70lb. Text Paper
Price is $23.79
Unit of measure 50/Pack
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Item # : 680165
Model # : QUA63574
Share high-priority documents with colleagues and staff when you use these Quality Park red one-sided standard-style string-and-button closure interdepartmental envelopes.
- Inter-departmental envelopes make moving documents between employees easy
- Envelope size: 13"H x 10"W
Price is $196.99
Unit of measure 100/Box
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Item # : 24260824
Model # : 8505-80W-50
LUX 5 x 5 Square Envelopes in 80lb. Bright White are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 5"L x 5"W
- Comes in 80lb. Bright White
Price is $16.59
Unit of measure 50/Pack
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Item # : 1984833
Model # : A7FFW-GB-50
LUX 70lb. Grocery Bag A7 Full Face Window Envelopes are perfect for mailing letters, photos, greeting cards and more!
- A7 Full Face Window Envelopes are perfect for mailing letters/photos/greeting cards/invitations
- Comes in Grocery Bag, 70lb. Text Paper
Price is $43.09
Unit of measure 50/Box
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Item # : 23996355
Model # : 10APW-WW-250
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 28lb. White Wove
- Dimensions: 4.125"L x 9.5"W
Price is $119.59
Unit of measure 250/Pack
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Item # : 282969
Model # : CUR-98-50
LUX Currency Envelopes (2 7/8 x 6 1/2) are the perfect gift envelope for all occasions, holidays, birthdays, graduations, company bonuses and more!
- Currency Envelopes (2 7/8 x 6 1/2) are perfect for the gift of cash for all occasions/holidays/birthdays/graduations/company/bonuses
- Comes in Gold Damask, 70lb. White Text Paper
Price is $20.09
Unit of measure 50/Pack
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Item # : 281881
Model # : EX7716-14-50
Lux® Size 10 open end envelope measures 4 1/8" x 9 1/2", is perfectly sized to send flat, heavy materials, numerous small items like coins, catalogs or jumbo cards and comes in candy pink color.
- Comes in Candy Pink, 80lb. Text Paper
- Dimensions: 4 1/8"H x 9 1/2"W
Price is $22.69
Unit of measure 50/Pack
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Item # : 24260427
Model # : LUX-8525-106-50
LUX 6 x 6 Square Envelopes in Wisteria are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 6"L x 6"W
- Comes in Wisteria
Price is $12.39
Unit of measure 50/Pack
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Item # : 24216252
Model # : 4590-07-50
LUX A10 Invitation Envelopes (6 x 9 1/2) are perfect for Invitations, Greeting Cards, Thank You Cards, Announcements and so much more!
- Dimensions: 6 x 9 1/2
- Comes in Gold Metallic
Price is $29.49
Unit of measure 50/Pack
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Item # : 1588542
Model # : 34992I
The JAM Paper #10 (4.13" x 9.5") strathmore wove envelope is a stylish option for people who are not too keen on using white or manila envelopes.
- Product Type: Strathmore Envelope
- Natural white wove paper envelope
Price is $19.99
Unit of measure 50/Pack
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Item # : 262110
Model # : LECV900
JAM Paper® 3 Drug size translucent clear tiny envelope in a pack of 25 is perfect for greeting cards, invitations or any other announcements and is made from natural vellum paper.
- Clear
- Size: 3 drug (2 5/16" x 3 5/8")
Price is $16.69
Unit of measure 25/Pack
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Item # : 1590111
Model # : 4023213H
The JAM Paper A9 regular white envelope offers high quality and smooth finish to deliver your messages or cards in style.
- Regular white envelope
- Blank interior for personalized message
Price is $63.79
Unit of measure 250/Box
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Item # : 24260395
Model # : LUX-4860-103-50
LUX #10 Square Flap Invitation Envelopes (4 1/8 x 9 1/2) in Navy are perfect for mailing Checks, Invoices, Letterhead, Personal Letters, Statements, Direct Mail and more!
- Dimensions: 4.125"L x 9.5"W
- Comes in Navy
Price is $22.09
Unit of measure 50/Pack
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Item # : 24261311
Model # : LUX-7CO-18-250
LUX #7 Coin Envelopes (3 1/2 x 6 1/2) in Ruby Red are perfect for the HOLIDAYS, Weddings, Parties, Place Cards, small parts and more!
- Dimensions: 3.5"L x 6.5"W
- Comes in Ruby Red
Price is $51.99
Unit of measure 250/Pack
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Item # : 1589034
Model # : 52610H
The JAM Paper A6 ultra lime brite hue envelope is optimal for dispatching your personalized messages and invitations.
- Ultra lime brite hue envelope
- Blank interior for personalized message
Price is $71.59
Unit of measure 250/Box
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Item # : 1985103
Model # : SDI-24WW-50
Drive-In banking envelopes are perfect for all of your cash handling needs. The open end coupled with the open seam, make these envelopes the ideal holder for cash and receipts.
- Small drive-in banking envelopes are perfect for all of your cash handling needs
- Comes in white, 24lb. Text paper
Price is $27.49
Unit of measure 50/Box
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Item # : 1029931
Model # : LUX-8520-103-50
LUX 80lb. Navy 5 3/4 x 5 3/4 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 Navy, 80lb. Text Paper
Price is $21.49
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Item # : 261229
Model # : 15860
JAM Paper® Size #10 Brite hue orange recycled paper envelope in a pack of 25 has dimension of 4 1/8" x 9 1/2" and is perfect for greeting cards, invitations or other announcements.
- Orange
- Size: #10 (4 1/8" x 9 1/2")
Price is $10.09
Unit of measure 25/Pack
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Item # : 281916
Model # : 5360-24-50
Lux® Size 10 square flap envelope in azalea metallic 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 Azalea Metallic, 80lb. Text Paper
Price is $44.59
Unit of measure 50/Pack
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Item # : 261305
Model # : 28210
JAM Paper® Regular square envelope of dimension 7.5" x 7.5" in white color with peel and seal closure is perfect for greeting cards, invitations, weddings or any announcement.
- Size: 7 1/2" x 7 1/2"
- Closure: Gum
Price is $25.19
Unit of measure 25/Pack
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Item # : 24260728
Model # : 4865-NLI-50
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) in Natural Linen are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 3.625"L x 5.125"W
- Comes in Natural Linen
Price is $14.79
Unit of measure 50/Pack
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Item # : 23996538
Model # : LUX-4865-39-50
LUX A1 Invitation Envelopes (3 5/8 x 5 1/8) are perfect for Invitations, Weddings, Announcements, Photos, and so much more!
- Comes in Blush
- Dimensions: 3.625"L x 5.125"W
Price is $26.79
Unit of measure 50/Pack
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Item # : 282168
Model # : LUX-8505-104-50
LUX 5 x 5 Square Envelopes are perfect for invitations, announcements, greeting cards and special occasions, square envelopes create a unique look!
- 5 x 5 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
- Comes in Vintage Plum, 80lb. Text Paper
Price is $17.49
Unit of measure 50/Pack
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Item # : 1588564
Model # : 15847I
The JAM Paper #10 (4.13" x 9.5") brite hue recycled envelope is a rather stylish option meant for carrying out official communication.
- Product Type: Business Envelope
- Ultra fuchsia paper envelope
Price is $19.99
Unit of measure 50/Pack
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Item # : 261817
Model # : V021377
JAM Paper® 10" x 13" Blue envelopes in a pack of 25 has an open end catalog with square gummed flap and is perfect for greeting cards, invitations, weddings or any announcement.
- Size: 10" x 13"
- Closure: Peal & seal
Price is $41.19
Unit of measure 25/Pack
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Item # : 508893
Model # : QUAR5106
Protect documents throughout the mailing process with these Quality Park Survivor Tyvek 14.25 x 20-inch catalog mailers.
- Catalog envelopes is used for sending flat, heavy materials or many small items like coins and catalogs
- White Tyvek envelopes provide superior protection for mailing important materials or documents
Price is $115.19
Unit of measure 25/Box
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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.