Square Envelopes
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Envelope Material
Item # : 282162
Model # : 8505-03-50
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 Natural, 70lb. Text Paper
Price is $25.19
Unit of measure 50/Pack
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Over 30
Item # : 282455
Model # : 5370-07-50
LUX® Size A2 envelope in gold metallic color measuring 4 3/8" x 5 3/4" is best suited for letter writers while it is designed to hold a quarter folded sheet of paper and is sold as 50 per pack.
- A2 (4 3/8 x 5 3/4) - Metallics - Gold are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Gold Metallic, 80lb. Text Paper
Price is $25.79
Unit of measure 50/Pack
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Over 30
Item # : 24260338
Model # : 72973-50
LUX Slimline Invitation Envelopes (3 7/8 x 8 7/8) in 24lb. Bright White are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 3.875"L x 8.875"W
- Comes in 24lb. Bright White
Price is $22.09
Unit of measure 50/Pack
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Over 30
Item # : 1588915
Model # : 99761I
The JAM Paper A2 natural white via linen recycled envelope comes with an apt color and finish to make it perfect for your party invitations and greeting cards.
- Natural white via linen recycled envelope
- Blank interior for personalized message
Price is $19.99
Unit of measure 50/Pack
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Over 30
Item # : 282773
Model # : FE4280-12-50
LUX® Size A7 Envelope in holiday green color measuring 5 1/4" x 7 1/4" has basis weight of 80 lbs, features a vellum finish and is sold as 50 per pack.
- Holiday green
- Size: A7 (5 1/4" x 7 1/4")
Price is $19.29
Unit of measure 50/Pack
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Over 30
Item # : 23996467
Model # : 24539-1000
Quality Park #8 5/8 Double Window Envelope (3 5/8 x 8 5/8) are perfect for mailing checks, invoices, letterhead, personal letters, statements, and direct mail
- Comes in White Wove w/ Self-Seal
- Dimensions: 3.625"L x 8.625"W
Price is $224.29
Unit of measure 1000/Pack
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Over 30
Item # : 262889
Model # : 3.25X3.25CELLO
JAM Paper® Clear 3 1/4 x 3 1/4 cello sleeves envelope in a pack of 100 has dimension of 3.2 x 0.1 x 3.2" and enhances the look of your greeting cards or promotions.
- Size: 3 1/4" x 3 1/4"
- Closure: Peal & seal
Price is $7.79
Unit of measure 100/Pack
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Over 30
Item # : 1589526
Model # : 96268H
JAM Paper® Open end envelope measuring 10" x 13" is perfectly sized for business correspondence, comes in manila color and is sold as 250 per pack
- Manila Open End Catalog Envelopes
- Size: 10 x 13 inches
Price is $93.59
Unit of measure 250/Box
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Over 30
Item # : 282790
Model # : 4880-NPC-50
LUX® Size A7 envelope in natural 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.
- Natural
- Size: A7 (5 1/4" x 7 1/4")
Price is $27.19
Unit of measure 50/Pack
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Over 30
Item # : 24261069
Model # : 4166-500
LUX 11 1/2 x 14 1/2 Open End Envelopes in 28lb. Bright White are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 11.5"L x 14.5"W
- Comes in 28lb. Bright White
Price is $171.39
Unit of measure 500/Pack
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Over 30
Item # : 24260639
Model # : LUXA7GF-B-100
LUX A7 Gatefold Invitation (5 x 7) in Midnight Black are perfect for announcing your event using a classic Gatefold style invitation!
- Dimensions: 5"L x 7"W
- Comes in Midnight Black
Price is $62.69
Unit of measure 100/Pack
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Over 30
Item # : 262951
Model # : 921B1CL
JAM Paper® 10 Size business plastic button and string closure envelope in clear color measuring 5 1/4" x 10" offers compact storage, organised management of materials and comes in a pack of 12.
- Size: 5 1/4" x 10"
- Closure: Button & string
Price is $38.59
Unit of measure 12/Pack Price per unit $3.22/Envelope
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Over 30
Item # : 813412
Model # : QUA63577
Send documents through the office with this 100-count box of Quality Park string-and-button brightly-colored one-sided standard-style blue inter-department envelopes.
- Inter-departmental envelopes are easy to spot as confidential
- Envelope size: 13"H x 10"W
Price is $193.69
Unit of measure 100/Carton
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Over 30
Item # : 262488
Model # : 66670
JAM Paper® A2 Size strathmore bright 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: A2 (4 3/8" x 5 3/4")
- Closure: Gum
Price is $11.19
Unit of measure 25/Pack
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Over 30
Item # : 24261251
Model # : 10951-50
LUX 7 1/2 x 7 1/2 Square Envelopes in 70lb. White are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 7.5"L x 7.5"W
- Comes in 70lb. White
Price is $22.49
Unit of measure 50/Pack
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Over 30
Item # : 281875
Model # : FLWH4260-03-50
Lux® Size 10 square flap envelope measures 4 1/8" x 9 1/2", is perfectly sized for elegant affairs as well as business purposes and comes in white color with silver lux lining.
- White/silver LUX lining
- Size: 4 1/8" x 9 1/2"
Price is $39.79
Unit of measure 50/Pack
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Over 30
Item # : 24175155
Model # : 263919489I
JAM Paper® 10 x 13 Open End Catalog Envelopes with Gum Closure are great to use for organizing documents, distributing promotional and marketing materials, mailing, filing and much more
- Presidential Blue Open End Catalog Envelopes
- Size: 10 x 13 inches
Price is $61.89
Unit of measure 50/Pack
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Over 30
Item # : 261382
Model # : 155629
JAM Paper® A8 Size light baby pink paper invitation envelope in a pack of 25 has dimension of 5 1/2" x 8 1/8" and is perfect for greeting cards, invitations or other announcements.
- Size: A8 (5 1/2" x 8 1/8")
- Closure: Gum
Price is $16.69
Unit of measure 25/Pack
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Over 30
Item # : 24261365
Model # : 12229-50
LUX 6 1/2 x 9 1/2 Booklet Envelopes in 24lb. Bright White are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 6.5"L x 9.5"W
- Comes in 24lb. Bright White
Price is $17.19
Unit of measure 50/Pack
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Over 30
Item # : 282118
Model # : EX8515-10-50
LUX 5 1/2 x 5 1/2 Square Envelopes are perfect for invitations, announcements, greeting cards and special occasions, square envelopes create a unique look!
- 5 1/2 x 5 1/2 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
- Comes in Magenta, 80lb. Text Paper
Price is $25.29
Unit of measure 50/Pack
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Over 30
Item # : 282115
Model # : 8515-15-50
LUX 5 1/2 x 5 1/2 Square Envelopes are perfect for invitations, announcements, greeting cards and special occasions, square envelopes create a unique look!
- 5 1/2 x 5 1/2 Square Envelopes are perfect for announcements/weddings/greeting cards/invitations
- Comes in Holiday Red, 60lb. Text Paper
Price is $14.29
Unit of measure 50/Pack
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Over 30
Item # : 1588737
Model # : 155699I
The JAM Paper A9 baby blue recycled envelope comes with an apt color and finish to make it perfect for your party invitations and greeting cards.
- Baby blue recycled envelope
- Blank interior for personalized message
Price is $33.19
Unit of measure 50/Pack
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Over 30
Item # : 405625
Model # : 1500E
Mail multiple-page forms, statements or documents with these 500 ComplyRight CMS-1500 4.5 x 9.5-inch white gum-seal window envelopes.
- Simple high-quality insurance forms envelopes that get the job done
- Envelope size: 4 1/2"H x 9 1/2"W
Price is $124.79
Unit of measure 500/Box
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Over 30
Item # : 2633139
Model # : 12828427F
JAM Paper® 10 x 13 Open End Catalog Envelopes, Navy Blue, 10/pack (12828427f)
- Envelope Features: Straight flap gum closure / Paper Weight: 28 lb / Smooth paper finish / 30% Recycled
- Size: 10 x 13 inches
Price is $15.49
Unit of measure 10/Pack
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Over 30
Item # : 282722
Model # : 4880-WPP-50
Made from high-quality, durable 60lb. paper (Refer to our Paper Weight Guide for clarification). Features a modern square flap, easily sealed by a Peel & Press Strip.
- Laser and inkjet printer compatible
- Choose from an assortment of delightful colors and send your next invitation or letter in style
Price is $25.39
Unit of measure 50/Pack
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Over 30
Item # : 24260236
Model # : 4162-50
LUX 10 x 15 Open End Envelopes in 28lb. Bright White are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 10"L x 15"W
- Comes in 28lb. Bright White
Price is $38.69
Unit of measure 50/Pack
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Over 30
Item # : 386315
Model # : EX4860-10-250
LUX® Size 10 square flap envelope in magenta color measuring 4 1/8" x 9 1/2" is perfect for personal or corporate business use, sold as 250 per box.
- #10 Square Flap Envelopes are perfect for mailing checks/invoices/letterhead/personal letters/statements/direct mail
- Comes in Magenta, 80lb. Text Paper
Price is $103.19
Unit of measure 250/Box
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Over 30
Item # : 24260555
Model # : 4872-08-50
LUX A4 Invitation Envelopes (4 1/4 x 6 1/4) in Quartz Metallic are perfect for the Holidays, Invitations, Announcements, Sending Cards, and so much more!
- Dimensions: 4.25"L x 6.25"W
- Comes in Quartz Metallic
Price is $14.79
Unit of measure 50/Pack
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Over 30
Item # : 281925
Model # : 5360-07-50
Lux® Size 10 square flap envelope in gold 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 Gold Metallic, 80lb. Text Paper
Price is $41.89
Unit of measure 50/Pack
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Over 30
Item # : 2301088
Model # : TYE12162FC
Tyvek envelopes provide superior puncture, tear and moisture protection.
- Tyvek Envelopes useful for shipping flat items such as documents or catalogs
- White "First Class" Tyvek constructed from 18 lb. olefin
Price is $402.69
Unit of measure 100/Carton
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Over 30
Item # : 24260530
Model # : 4892-W-50
LUX 8 1/2 x 10 1/2 Open End Envelopes in 70lb. Bright White are perfect for Catalogs, Annual Reports, Brochures, Magazines, Invitations and more!
- Dimensions: 8.5"L x 10.5"W
- Comes in 70lb. Bright White
Price is $34.79
Unit of measure 50/Pack
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Over 30
Item # : 260858
Model # : 196556
JAM Paper® Strathmore bright wove monarch envelope in a pack of 25 is elegant for any invitations, RSVPs or stationery and is made with certified renewable energy.
- Size: Monarch (3 7/8" x 7 1/2")
- Closure: Gum
Price is $12.39
Unit of measure 25/Pack
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Over 30
Item # : 282967
Model # : CUR-97-50
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 Christmas Trees, 70lb. White Text Paper
Price is $22.59
Unit of measure 50/Pack
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Over 30
Item # : 427811
Model # : QUAR4650
Expandable tyvek mailer delivers the best possible protection at a shipping-cost-saving weight.
- Flap-Stick closure, requires no moisture to seal
- 14 lb. white DuPont tyvek
Price is $393.99
Unit of measure 100/Carton
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Over 30
Item # : 282452
Model # : 5370-26-50
LUX® Size A2 envelope in flame metallic color measuring 4 3/8" x 5 3/4" is best suited for letter writers and it is designed to hold a quarter folded sheet of paper and is sold as 50 per pack.
- A2 (4 3/8 x 5 3/4) - Metallics - Flame are perfect for party invites/thank you cards/wedding invites/announcements
- Comes in Flame Metallic, 80lb. Text Paper
Price is $16.89
Unit of measure 50/Pack
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.