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Double Window Security Business Envelopes  (11 Products)
Double-window envelopes have plastic covered openings that allow sender and receiver addresses to show through. Since checks and invoices generally already have that information on them, these two-window envelopes eliminate the need for address stickers or writing them by hand. Choose the two-window envelopes that best fit office needs. Read More
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Quality Park Redi-Seal Security Tinted Business Envelopes, 3 7/8 x 8 7/8, White Wove, 500/Box (QUA

Quality Park Redi-Seal Security Tinted Business Envelopes, 3 7/8" x 8 7/8", White Wove, 500/Box (QUA24529)

#9 business envelopes are suitable for many mailing projects
Made from white wove 24 lbs. paper for durability
These envelopes measure 3 7/8"H x 8 7/8"L in size, providing enough space for your mail
$79.99 Box
Item # 901-24529
Quick Ship: 1-2 business day delivery
Medical Arts Press® Double Window Self Seal Envelopes, 3-7/8x8-7/8, Security Tint,  500/Box

Medical Arts Press® Double Window Self Seal Envelopes, 3-7/8x8-7/8", Security Tint, 500/Box

US #9 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 3 7/8"H x 8 7/8"L in size, providing enough space for your mail
$51.99 Box
When you buy 5+
Item # 901-32084
Lifetime Warranty
One-Write Envelopes for Payroll/General Expense Systems; Double Window, 3-9/16x8-7/8

One-Write Envelopes for Payroll/General Expense Systems; Double Window, 3-9/16x8-7/8"

Double window envelopes are perfect for mailing checks to appropriate recipients
Compatible with One-Write Payroll/General Expense Systems
Replacement envelopes for Payroll/General Expense Systems 1310013, 1310016, 1310019, 1310023, 1310026, 1310029, 1310033, 1310036, 1310039
$29.99 Pack
When you buy 2+
Item # 901-131041
Double Window Self Seal Envelopes for Blank Voucher, Top and 3-Per-Page Laser Checks, 250/Box

Double Window Self Seal Envelopes for Blank Voucher, Top and 3-Per-Page Laser Checks, 250/Box

Refer to item #55437 for the gummed-flap version
Order in quantity shown in catalog and on the Web site
250 Envelopes per pack
$39.99 Pack
When you buy 2+
Item # 901-55438
Quality Park Redi-Seal Security Tinted Business Envelopes, 3 5/8 x 8 5/8, White, 500/Box (QUA24539

Quality Park Redi-Seal Security Tinted Business Envelopes, 3 5/8" x 8 5/8", White, 500/Box (QUA24539)

#8-5/8 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 3 5/8"H x 8 5/8"L in size, providing enough space for your mail
$79.99 Box
When you buy 10+
Item # 901-24539
Quick Ship: 1-2 business day delivery
Double Window Self-Seal Envelopes for Middle Laser Checks, 250/Pack

Double Window Self-Seal Envelopes for Middle Laser Checks, 250/Pack

Lower window is 9/16" up from the bottom and 5/8" and measures 4"W x 1"H.
Upper window is 2-1/4" up from the bottom and 3/8" from the left and measures 3-3/4"W x 1"H.
Overall size: 8-3/4"W x 3-5/8"H.
$34.99 Pack
When you buy 4+
Item # 901-55440
Double Window Security Self Seal Envelopes

Medical Arts Press® Double Window Self Seal Envelopes; 4-1/8x9", Security Tint, 500/Box

Self-seal envelope with with clear filmview windows
Patient's name and address show through bottom window, your return address shows through top
Made from white 24 lb. white wove peek-proof stock for privacy
$56.99 Box
When you buy 5+
Item # 901-32373
Lifetime Warranty
3-7/8x8-7/8 Double Window Self Seal Envelopes

Medical Arts Press® Double Window Self Seal Envelopes; 3-7/8x8-7/8", Security Tint, 500/Box

Self-seal envelope with with clear filmview windows
Patient's name and address show through bottom window, your return address shows through top
Made from white 24 lb. white wove blue peek-proof tint stock for privacy
$55.99 Box
When you buy 5+
Item # 901-30277
Lifetime Warranty
Medical Arts Press® Double Window Gummed Envelopes, 3-7/8 x 8-7/8, Security Tint, 500/Box

Medical Arts Press® Double Window Gummed Envelopes, 3-7/8" x 8-7/8", Security Tint, 500/Box

Made From White 24 Lb. White Wove Blue Peek-Proof Tint Stock for Privacy
0.87-inch Between Top & Bottom Window
500/Box
$47.99 Box
When you buy 5+
Item # 901-32082
Lifetime Warranty
Medical Arts Press® Double Window Gummed Envelopes, 4-1/8x8-7/8, Security Tint, 500/Box

Medical Arts Press® Double Window Gummed Envelopes, 4-1/8x8-7/8", Security Tint, 500/Box

Durable Gummed Flap Envelope with Clear Filmview Windows
Patient S Name And Address Show Through Bottom Window, Your Return Address Shows Through Top
Made From White 24 Lb. White Wove Blue Peek Proof Tint Stock for Privacy
$49.99 Box
When you buy 5+
Item # 901-33003MAP
Lifetime Warranty
One-Write Envelopes for General Expense Systems; Double Window, 3-9/16x8-7/8

One-Write Envelopes for General Expense Systems; Double Window, 3-9/16x8-7/8"

Double-window envelopes are perfect for mailing checks to the appopriate individuals. Compatible with One-Write General Expense System.
Replacement envelopes for General Expense Systems: 1110013, 111016, 1110019, 1110023, 1110026, 1110029, 1110033, 1110036, 1110039
$29.99 Pack
When you buy 2+
Item # 901-111041
SS,56604
Want to know more about Double Window Security Business Envelopes

Double-window envelope uses

Two-window envelopes make it easy for payroll departments to send checks and invoices to employees or clients. Many window envelopes, such as JAM envelopes, have only one window for the recipient address whereas double-window options have a place for the sender's address, too. The windows have clear plastic so addresses cleanly show through. All workers have to do is place the invoices or checks inside with the front facing out, seal, and stamp. Companies can also use these types of business envelopes for letters or financial statements where users can include address information on printed pages inside to avoid having to label the envelopes.

Two-window envelope features

The features found on double-window envelopes can vary by manufacturer. Some affect use while others are personal preference. One feature is security tint on the inside of the envelopes to prevent prying eyes from seeing sensitive information within when held up to the light. Many are self-sealing choices for easy closure by peeling paper off a sticky area and then pressing it down to seal. Gummed adhesive is the most common type of closure that seals with just a little bit of moisture from the tongue, damp cloth, or envelope moistener. The type of flap on the envelopes also varies. Choose from square flaps for a professional look or V-shaped flaps for a more elegant flair. It's also possible to create custom print envelopes with windows that include a business logo on a corner or the back flap.

Double-window envelope brands

Choose from a few different brands that make two-window envelopes. These companies also make other business envelopes including insurance claim, data filing, medication, Tyvek®, and coin envelopes. Get everything the company needs from one brand such as:

  • Quality Park™
  • Medical Arts Press®
  • Delforms®

Two-window envelope sizes

The majority of two-window envelopes are #8 or #9 envelopes. A #8 is 3-5/8 x 8-5/8 inches for checks, while a #9 is 3-7/8 x 8-7/8 inches for invoices. The difference might seem small but these sizes are actually designed to hold checks and invoices perfectly.

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