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Color Family
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Envelope Type
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Paper Weight in Pounds
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Item no longer available
Item # 901-CL912
Manila
Square
100 Per Pack
9" x 12"
Catalog
None
12
Paper
100
32
Untinted
9
Quill Brand
Clasp
10 1/2 Catalog
N/A
N/A
N/A
Shop Business Envelopes
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Quill Brand® 100/Box Clasp Catalog Envelope, 10" x 13", Kraft (7CL101328)
Item #: 901-7CL101328
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb. heavyweight Kraft paper
Size: 10" x 13"
$49.99
1-3 box
($0.50/EACH)
Save 6%
$46.99
4+ box
($0.47/EACH)
Quill Brand® 100/Box Clasp Catalog Envelope, 9" x 12", Kraft (7CL91228)
Item #: 901-7CL91228
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
Made from kraft paper that conceals contents from prying eyes
Size: 9" x 12"
$36.69
Per box
($0.37/EACH)
Quill Brand® 100/Box Easy Close Self Seal Security Tinted #10 Business Envelope, 4-1/8" x 9-1/2", White (69703 / 70711)
Item #: 032-75762
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$5.09
Per box
($0.05/EACH)
Quill Brand® 500/Box Gummed #10 Business Envelope, 4-1/8" x 9-1/2", White Wove (WW10ES)
Item #: 901-WW10ES
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$30.59
1-3 box
($0.06/EACH)
Save 5%
$28.99
4+ box
($0.06/EACH)
Quill Brand® 500/Box Self Seal Security Tinted #10 Left Window Envelope, 4-1/8" x 9-1/2", White Wove (3016452)
Item #: 901-60350Q
Envelopes are suitable for all your mailing needs
Made from 24 lbs. white wove paper for durability
These envelopes measure 4 1/8" x 9 1/2" in size, providing enough space for your mail
$62.29
Per box
($0.12/EACH)
Quill Brand® 250/Box Easy Close Catalog Envelope, 9" x 12", Brown Kraft (PS91228B)
Item #: 901-PS91228B
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb. plain brown Kraft paper
Size: 9" x 12"
$74.39
Per box
($0.30/EACH)
Quill Brand® 500/Box Easy Close Self Seal #10 Business Envelope, 4-1/8" x 9-1/2", White (69686 / 70701)
Item #: 901-75746Q
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$43.89
Per box
($0.09/EACH)
Staples Self Seal Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (ST28731-CC)
Item #: 901-1775861
Pressure Sensitive Adhesive
#9 business envelopes are suitable for all your mailing needs
These envelopes measure 3 7/8"H x 8 7/8"L in size, providing enough space for your mail
$63.29
Per box
($0.13/EACH)
Quill Brand® 500/Box Security Tinted #10 Double Window Envelope, 4-1/8" x 9-1/2", White Wove (3016430)
Item #: 901-60349
US #10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail
$74.39
Per box
($0.15/EACH)
Quill Brand® 500/Box Gummed Security Tinted #8 Double Window Envelope, 3-5/8" x 8-5/8", White (69741 / 70727)
Item #: 901-75041
Business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 3-5/8" x 8-5/8"
$32.49
Per box
($0.06/EACH)
Quill Brand® 100/Box Clasp Catalog Envelope, 6" x 9", Kraft (7CL6928)
Item #: 901-7CL6928
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb. heavyweight Kraft paper
Size: 6" x 9"
$27.59
Per box
($0.28/EACH)
Quill Brand® 500/Box Gummed Security Tinted #9 Double Window Envelope, 3-7/8" x 8-7/8", White (75042)
Item #: 901-75042
Business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 3-7/8" x 8-7/8"
$84.69
Per box
($0.17/EACH)
New Customers
Quill Brand® 500/Box Gummed Security Tinted #10 Business Envelope, 4-1/8" x 9-1/2", White Wove (69679 / 70695)
Item #: 901-10CR
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$23.29
Per box
($0.05/EACH)
Staples Self Seal Self Seal Security Tinted #10 Double Window Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST28730-CC)
Item #: 901-1775862
Pressure Sensitive Adhesive
#10 business envelopes are suitable for all your mailing needs
White color is ideal for business or personal correspondence
$56.09
Per box
($0.11/EACH)
Quill Brand® 250/Box Easy Close Catalog Envelope, 9" x 12", White (PS91228W)
Item #: 901-PS91228W
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb plain white wove stock
Size: 9" x 12"
$59.29
1-3 box
($0.24/EACH)
Save 5%
$55.99
4+ box
($0.22/EACH)
Staples QuickStrip EasyClose Self Seal #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST381936/381936)
Item #: 901-381936
Envelopes are great for mailing letters and documents
Made from 24 lbs. white wove paper for durability
These envelopes measure 4 1/8" x 9 1/2" in size, providing enough space for your mail
$46.99
Per box
($0.09/EACH)
Quill Brand® 250/Box Easy Close Catalog Envelope, 10" x 13", Brown Kraft (PS101328B)
Item #: 901-PS101328B
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb. plain brown Kraft paper
Size: 10" x 13"
$80.69
Per box
($0.32/EACH)
Quill Brand® 500/Box Gummed Security Tinted #10 Window Envelope, 4-1/8" x 9-1/2", White Wove (69667 / 70693)
Item #: 901-10CW
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$39.19
Per box
($0.08/EACH)
Quill Brand® 500/Box Gummed #10 Window Envelope, 4-1/8" x 9-1/2", White Wove (69711 / 70719)
Item #: 901-WW10WES
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$69.39
Per box
($0.14/EACH)
Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9" x 12", White, 100/Box (ST379479-CC)
Item #: 901-379479STP
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
White paper shows labeling and writing clear and concise
Dimensions: 9"L x 12"H
$29.69
Per box
($0.30/EACH)
Staples Kraft Clasp & Moistenable Glue Catalog Envelopes, 10" x 13", Brown, 100/Box (ST187039-CC)
Item #: 901-187039
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
Made from brown kraft paper that conceals contents from prying eyes
Dimensions: 10"L x 13"H, size #13
$43.59
1-4 box
($0.44/EACH)
Save 17%
$35.99
5+ box
($0.36/EACH)
Staples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)
Item #: 901-511289
US #10 business envelopes are suitable for all your mailing needs
Made from white 24 lb. paper for durability
These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail
$40.39
1-3 box
($0.08/EACH)
Save 5%
$37.99
4+ box
($0.08/EACH)
Quill Brand® 250/Box Easy Close Catalog Envelope, 10" x 13", White (PS101328W)
Item #: 901-PS101328W
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb plain white wove stock
Size: 10" x 13"
$94.99
Per box
($0.38/EACH)
Quill Brand® 500/Box EasyClose Security Tinted #10 Business Envelope, 4-1/8" x 9-1/2", White (3016453)
Item #: 032-60353
US #10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail
$17.49
Per box
($0.03/EACH)
Want to know more about Shop Business Envelopes
What Are Window Envelopes?
A window envelope is a type of conventional envelope that features a plastic film, or window, to allow the recipient’s name and address to be printed on the document or paper within. These envelopes are typically purchased alongside other shipping, packing & mailing supplies.
They are ideal for businesses and corporations because a typed name and address look more professional than handwriting. These window envelopes pair great with other mailing supplies, such as envelope moisteners and letter openers for keeping paperwork and documentation organized and labeled.
What Types of Envelopes with Windows Are Available?
Window envelopes, also called commercial envelopes, have triangular flaps and are sized according to number. The most prominent are numbers 7, 10, 12, and 14. Envelopes with windows can range in size from about 3.75 x 6.5 inches to 5.5 x 11 inches. Each one typically features a blank field for handwritten or printed mailing and return addresses, or for address imprints with pad-and-ink custom stamps. Further information on how to pick the right size envelope can be found on the Quill business envelope size chart.
Some have single or double windows to display pre-printed addresses on inside documents. For businesses who often mail out sensitive papers with confidential information, some business window envelopes include tinted inner weaves to conceal the contents when held against a light. Like many conventional envelopes, business envelopes for outgoing mail with windows have secure closures, including moisture-activated adhesives and peel-and-seal strips.
How Can Business Envelopes with Windows Be Used?
Whether you work at a law office or run your own medical practice, window envelopes can be used for an array of applications across different businesses and industries. They can safely transport documents and sensitive materials and elevate the appearance of any greeting or invitation. Here are just a few things you can send with window envelopes:
- Interoffice communication: Interoffice business window envelopes feature a button and string design and are sized to fit standard letter sized sheets of paper, making them ideal for transferring and tracking documents between different departments within the same company.
- Legal and medical documentation: Tear and moisture-resistant open window envelopes, like the ones created by Tyvek, are ideal for sending out medical records and legal paperwork that can’t afford to be damaged or destroyed.
- Letters and invoices: Number 10 window envelopes are the most common size available, measuring 4.125 x 9.5 inches, and are perfect for mailing out most forms of business correspondence, such as letters and invoices.
