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The Best 9 Envelopes Double Window of 2023 – Reviewed and Top Rated

2,033 Reviews Scanned

Rank No. #1

Amazon Basics #9 Double Window Security Tinted Envelopes, One Size, 500 Count, White

500 standard-size security-tinted #9 double window envelopes
Ideal for 8.5-by-11-inch computer-generated invoices and statements
Double windows 3/8-inch from the left to show sender info (2 inches from bottom) and recipient info (1/2 inch from bottom)
#9 envelope size 9.84 x 22.54 cm each

SaleRank No. #2

Columbian #9 Double-Window Security Envelopes, SimplySafe Tamper Evident, Pull Strip, Peel and Seal, for Invoices and Statements, 3-7/8 x 8-7/8 Inches, 500 per Box (COLO166), White

Box of 500 Columbian white double window #9 envelopes (3-7/8" x 8-7/8") with a SimplySafe tamper-evident seal and peel off Release & Seal closure; top window: 7/8" x 3 1/2"; bottom window: 1" x 4"
Columbian #9 double window envelopes have a patented SimplySafe seal that will show signs of tampering, safeguarding against unauthorized opening
Protect critical documents or your customers' sensitive data; these tinted envelopes have a reflex blue pattern that obscures the details of what's inside
Each #9 envelope is easy to open and close; simply remove the Release & Seal strip and press the flap closed for a clean, sanitary seal; use the pull strip to open without difficulty
Stock up on boxes of 500 window envelopes and save; great for bulk mailings, these number 9 envelopes show sender and receiver addresses and can be run through a postage machine

Rank No. #3

Amazon Basics #9 Envelopes with Peel & Seal, Double Window, Security Tinted, 500-Pack, White

500-count pack of #9 security envelopes with Peel & Seal closure—no moisture needed
Interior security tint keeps content private; securely send checks, invoices, or other confidential documents
Double window allows sender and recipient addresses to show through
24-pound white wove paper for quality and strength; ideal for home or office
Measures 3-7/8 by 8-7/8 inches each

Rank No. #4

Iconikal Double Window Tamper-Evident Dual-Flap Closure Security Envelopes, Size #9, 250-Count

Load envelopes more efficiently and quickly with dual-flap press-and-seal system to quickly seal your envelopes - just fold up the bottom flap and press the top flap down for an instant unbreakable seal. No licking, peeling, or wetting to get your envelope to seal!
These security envelopes are printed with a security tint on the inside to prevent see-through inspections and include tamper-evident, self-sticking permanent seals
Double-windowed front makes it easy to display shipping and return addresses printed on the contents, and the crisp, 24-lb, 100% recycled white weave paper gives these envelopes a professional feel
These size #9 envelopes measure 3-7/8 inches tall by 8-7/8 inches wide (3.875" T x 8.875" W) - wide enough to hold tri-folded letter and/or A4 paper
Includes (250) security envelopes to send mail the safer way with these tamper-evident security envelopes from Iconikal!

Rank No. #5

500#9 Double Window Security Envelopes, PANDRI NO.9 Self Seal White Envelopes Designed for Invoices, Business Statements & Documents - Number 9 Size 3 7/8 Inch X 8 7/8 Inch - 24 LB

✉️SECURITY ENVELOPE: Our #9 double window envelopes are perfect for secure business and legal mail, invoices or other confidential documents. With blue security tint for privacy and used to protect sensitive data
✉️DOUBLE WINDOW STRUCTURE: Sending and mailing addresses can be clearly displayed for standard business and legal mailings,advertising campaigns etc, reducing the hassle of handwritten addresses, Top window :1 3/16" x 3.5"; Bottom window: 1" x 4"
✉️SECURE TONE: Using the inner grain secrecy printing, blue secure tone backing,under the light also to ensure the privacy of your invoices and statements, without fear of any prying eyes
✉️SELF SEAL DESIGN: This design makes it quicker and easier to send more invoices, Just peel and press without the need for glue sticks and licking envelopes, a huge time save.Ideal for mailing large quantities of documents
✉️LONG TERM SUPPLY: Each box has 500 quality #9 double window envelopes for a long lasting supply, perfect for bulk mailings. This is the envelope you're looking for. Order now

Rank No. #6

#9 Double Window Security Envelopes, HERKKA No.9 Double Window Business Envelopes Designed for Quickbooks Invoices and Business Statements - Number 9 Size 3 7/8 Inch X 8 7/8 Inch - 24 LB - 500 Pack

500 PACK SELF SEAL ENVELOPES: HERKKA No9 Security envelopes are designed with Peel and Seal closure-no moisture needed and a premium security tint to protect sensitive information and a super strong SELF-SEAL strip. Perfect for home or office; securely send checks or other confidential documents.
PREMIUM SECURITY CHECK TINT ENVELOPES: The interior of our No9 Security envelopes use a dark navy, heavy coverage security tint to provide guaranteed privacy for your legal or business mail, offer the protection contents and sensitive information, a security tint makes envelopes hard to see through that ensures upmost privacy.
DOUBLE WINDOW DESIGN: Only sender and return address will show on your QuickBooks invoices and monthly bills through our unique 2 window . No show of memo, Payee line or amount in windows. Perfectly fits QuickBooks Invoices and business billing statements.
QUICK-SEAL CLOSURE: Our No9 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting.
LONG LASTING SUPPLY: Large sized envelopes and 500 envelopes in every pack for a long lasting supply, perfect for everyday business correspondence and large mailing tasks! Click the Orange Button to order now.

SaleRank No. #7

500#9 FLIP & SEAL Double Window Security Envelopes - for Invoices, Statements & Documents, Self-Sealing Adhesive Seal, Security Tinted, Size 3-7/8 x 8-7/8-24 LB - 500 Count (30109)

DOUBLE WINDOW SECURITY ENVELOPES; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, statements, standard business & legal documents, with secure flip and seal adhesive and tinted security wave patterns
TINTED SECURITY WAVE PATTERN; perfect for mailing invoices, statements, standard business & legal documents and sensitive correspondence, our #9 Envelopes are printed with a secure tinted wave pattern, easily obscuring numbers and data for premium, added security compared to other cheap envelopes
DUAL WINDOW DESIGN; easily read dual windows for everyday business mailings to easily display postal addresses. Each envelope contains two front windows, a 1" X 3/16" top window positioned 3/8" from the left and 2-1/16" from the bottom and the bottom 1 X 4" window is 3/8" from the left and 1/2" from the bottom
FLIP AND SEAL; forget cheap, weak, gummed envelope seals that easily tear, our Double Window Security Envelopes are designed with quick, ultra secure flip and seal adhesives, creating a secure seal that won’t accidentally open, perfect for time saving bulk mailings
LONG LASTING SUPPLY; perfect for everyday business use, our envelopes are provided as an ultra long lasting, 500 envelope supply measuring 3-7/8 x 8-7/8, ideal for mass mailing and all business needs!

Rank No. #8

100#9 Double Window Security Envelopes, WINPAQ NO.9 Self Seal White Envelopes Designed for Invoices, Business Statements & Documents - Number 9 Size 3 7/8 Inch X 8 7/8 Inch - 24 LB

✉ PREMIUM QUALITY - 3 7/8 x 8 7/8 Peel & Seal Office Envelopes designed to fit Invoices, Business Statements & Documents
✉ MULTIPURPOSE: Ideal for office use, securely send invoices, confidential documents, billing statements, other business mail and etc.
✉ PEEL & SEAL: Quick & convenient seal provides a reliable, tamper-evident tight seal to secure all enclosures. Simply remove strip and press to close. ECO-FRIENDLY: These envelopes are made from eco-friendly paper materials and recyclable..
✉ SECURITY TINTED – Premium security printed design to protect contents and sensitive information, our security tint completely hides you mail.
✉ QUANTITY – 100Pcs Per Pack

Rank No. #9

500#10 Double Window Security Envelopes, PANDRI NO.10 Self-Seal Window Envelopes Designed for QuickBooks Invoices, Business Statements & Documents - Number 10 Size 4 1/8 Inch X 9 1/2 Inch - 24 LB

#10 SECURITY DOUBLE WINDOW ENVELOPE: PANDRI #10 envelope's dual window design allows for easy reading of the window's contents. It is perfect for secure business mail, invoices, bills, checks and other business mail
DOUBLE WINDOW DESIGN:Sending and mailing addresses can be clearly displayed Protects sensitive content and information for standard business and legal mailings, advertising campaigns, etc. Reducing the hassle of handwritten addresses
QUICK AND EASY TO SEAL:Designed with a super strong self-sealing adhesive strip that forms a complete, super secure seal across the width of each envelope, eliminating the need for glue sticks and licking envelopes, allowing for quicker and easier sending of more invoices, a huge time saver and perfect for mass mailing
SAFE INNER GRAIN: Using the inner grain secrecy printing technology, the secure tone backing makes the envelope hard to see through and ensures the privacy of your invoices and statements under the light without any prying eyes
LONG LASTING SUPPLY: With 500 #10 double window envelopes per box for long lasting supply, they are ideal for everyday business correspondence and large mailing tasks. This is the envelope you're looking for. Order Now

Rank No. #10

500 No. 9 Double Window Security Envelopes - Designed for Quickbooks Invoices and Business Statements with Self Seal Peel and Seal Flap - Number 9 Size 3 7/8 Inch X 8 7/8 Inch

Perfectly fits QuickBooks Invoices and business billing statements: sender and return address will be visible on your QuickBooks invoices and monthly bills through our unique two window design.
Quickly and easily stuff our wide envelopes with several invoices or business statements
Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design
Just peel and seal to create a strong lasting seal without licking or moistening. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.
Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper

Rank No. #11

500#10 FLIP & SEAL Double Window Security Envelopes - for Invoices, Statements & Legal Documents, Self-Sealing Adhesive Seal, Security Tinted, Size 4 ⅛ X 9 ½ - 24LB, 500 Count (30110)

DOUBLE WINDOW SECURITY ENVELOPES; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, statements, standard business & legal documents, with secure flip and seal adhesive and tinted security wave patterns
TINTED SECURITY WAVE PATTERN; perfect for mailing invoices, statements, standard business & legal documents and sensitive correspondence, our #10 Envelopes are printed with a secure tinted wave pattern, easily obscuring numbers and data for premium, added security compared to other cheap envelopes
DUAL WINDOW DESIGN; easily read dual windows for everyday business mailings to easily display postal addresses. Each envelope contains two front windows, a 1" X 3-1/2" top window positioned 1/2" from the left and 2-1/2" from the bottom and the bottom 1-1/8 X 4" window is 1/2" from the left and 3/4" from the bottom
FLIP AND SEAL; forget cheap, weak, gummed envelope seals that easily tear, our Double Window Security Envelopes are designed with quick, ultra secure flip and seal adhesives, creating a secure seal that won’t accidentally open, perfect for time saving bulk mailings
LONG LASTING SUPPLY; perfect for everyday business use, our envelopes are provided as an ultra long lasting, 500 envelope supply measuring 4-1/8 x 9-1/2, ideal for mass mailing and all business needs!

SaleRank No. #12

500#10 Double Window SELF Seal Security Envelopes - for Invoices, Statements & Documents, Security Tinted - EnveGuard, Size 4-1/8 x 9-1/2 -White - 24 LB - 500 Count (30001)

DOUBLE WINDOW SECURITY ENVELOPES; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, statements, standard business & legal documents, with super strong SELF-SEAL strip and tinted security patterns
TINTED SECURITY PATTERN; perfect for mailing invoices, statements, standard business & legal documents and sensitive correspondence, our #10 Envelopes are printed with a secure tinted pattern, easily obscuring numbers and data for premium, added security compared to other cheap envelopes
DUAL WINDOW DESIGN; easily read dual windows for everyday business mailings to easily display postal addresses. Each envelope contains two front windows, a 1" X 3-1/2" top window positioned 1/2" from the left and 2-1/2" from the bottom and the bottom 1-1/8 X 4" window is 1/2" from the left and 3/4" from the bottom
QUICK-SEAL CLOSURE; our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting
LONG LASTING SUPPLY; perfect for everyday business use, our envelopes are provided as an ultra long lasting, 500 envelope supply measuring 4-1/8 x 9-1/2, ideal for mass mailing and all business needs!

SaleRank No. #13

Columbian #9 Security Envelopes, 500/Box, Double Window, 3-7/8" x 8-7/8", Redi-Seal Self Seal, For Invoices & QuickBooks Statements, White (COLO181)

Get a jumbo box of 500 Columbian double window #9 envelopes (3-7/8" x 8-7/8") each with a security tinted interior and quick press-to-seal Redi-Seal closure
Each white envelope is made from 24 lb white wove paper with an interior security tint pattern so you can't see what's inside; ideal for obscuring sensitive information & protecting critical documents
#9 Envelopes fit inside #10 envelopes; side seam envelopes allow for a smooth, fold-free back panel for printing graphics, logos, and more
Redi-Seal self seal mailing envelopes require no moisture; the unique double flap design allows you to simply raise the lower flap and press to seal closed
Double window envelopes display just the sender & receiver addresses and keep sensitive information out of view; top window: 1-13/16" x 3-1/2"; bottom window: 1" x 4"; envelope: 3-7/8" x 8-7/8"

Rank No. #14

500 No. 9 Flip and Seal Double Window Security Envelopes - Designed for Quickbooks Invoices and Business Statements with Self Seal Flip Press and Seal Flap -Number 9 Size 3 7/8 Inch X 8 7/8 Inch

Perfectly fits QuickBooks Invoices and business statements: sender and return address will be visible on your QuickBooks invoices and monthly bills through our unique double window design.
Quickly and easily stuff our wide envelopes with several invoices or business statements
Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design
Save time with easy to use flip and seal self-seal design; With no need for licking or moistening, our self seal design allows for sending hundreds of invoices quickly and easily and is guaranteed to stay sealed with no need for tape or glue sticks.
Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper

SaleRank No. #15

Quality Park #9 Security Envelopes, Double Window, Self Seal, Invoices/QuickBooks Statements, 3-7/8 x 8-7/8 Inches, 24 lb White, 500/Box (QUA24529)

Our big box of 500 #9 double window envelopes (3-7/8 in x 8-7/8 in) fit QuickBooks invoices & statements, not checks!; our self sealing envelopes have Redi-Seal press-to-seal closures & security tints
Redi-Seal mailing envelopes have a unique double flap design that requires no moisture; just raise the lower flap and press for a no-fuss self seal envelope
Double window envelopes show just the sender and receiver addresses; our business envelopes keep private info out of view; top window: 1-3/16" x 3-1/2"; bottom: 1" x 4"; envelope: 3-7/8" x 8-7/8"
Security envelopes shield identification numbers & private data with a special security pattern to scramble the appearance of text; keeps envelope contents safe from prying eyes, even if held to light
#9 Mailing envelopes measure 3-7/8" x 8-7/8" and tuck neatly into #10 envelopes as reply envelopes; made of 24 lb white wove paper with professional side seams; stock up on boxes of 500

Rank No. #16

NextDayLabels #9 Ready-Seal Double Window Security Tinted Check Envelopes, Compatible for QuickBooks Checks, Sage 100 program, Blackbaud Software ETC, Box of 500

Box of 500 #9 Double Window Check Envelope, 3-7/8 X 8-7/8
Fold and Seal - Security Tint Inside
"Stop Licking Envelopes" Just fold the flap, get a quick, secure seal
Guaranteed to fit all your computer business checks
Made in the USA by Next Day Labels TM

Rank No. #17

Office Depot 100% Recycled Lift Press(TM) Double-Window Envelopes, 9 (3 7/8in. x 8 7/8in.), White, Pack Of 500, 76169

Simply lift and press! Lift & Press closure provides a permanent seal immediately upon contact, so you can be sure that your documents will safely arrive at their destination. Plus, you can easily see addresses with these double-window envelopes.
Tamper-evident seal provides added protection.
With Office Depot double-window recycled envelopes, there's no need to write out labels. Windows display the return and mailing address.
Office Depot Lift & Press white envelopes are security-tinted inside for privacy and confidentiality.
Made of crisp 24-lb white wove for a substantial feel.

Rank No. #18

NextDayLabels - #9 Double Window Security Envelope (Regular Gum - 500 Per Pack)

Double Window Security Check Envelopes
Designed for all Laser Checks
Made in the USA and 100% Guaranteed

Rank No. #19

500 Pack #10 Envelopes, Letter Size Double Window Envelopes for Quickbooks Invoices and Business Statements, Security Tinted, Gummed Seal, 24 lb Heavy Duty Paper, 4 1/8 x 9 ½ Inches, White

BUSINESS ENVELOPES, #10: Level up your professional correspondence with our presentable, high-quality mailing envelopes. At 4 1/8 x 9 ½ inches, these are the best dimensions for everyday office use.
DOUBLE WINDOW DESIGN: There’s no need to spend extra money on custom printing or stamping. Our letter envelopes with windows will ensure perfect alignment of your return and sender address.
SECURITY TINTED: While using them as standard white envelopes, letter size envelopes, or for official documents, you can protect sensitive information and ensure confidentiality, thanks to the security pattern inside that masks their contents.
GUMMED SEAL CLOSURE: Create a strong, lasting seal by moistening the gummed area over the flap and pressing down. With their 24 lb paper weight, our security envelopes #10 ensure complete privacy.
BULK PACK OF 500: Our bulk pack of dual window check envelopes will make sure you always have enough at hand to fulfill mass mailing needs. Streamline your business operations with these shipping essentials.

SaleRank No. #20

Columbian #8 5/8 Security Envelopes, 500/Box, Double Window, 3-5/8" x 8-5/8", Release & Seal Self Seal, SimplySafe Tamper Evident, White (COLO156)

Get a jumbo box of 500 Columbian double window #8 5/8 envelopes (3-5/8" x 8-5/8") each with a SimplySafe tamper-evident pull strip, security tinted interior, and easy peel off Release & Seal closure
These security envelopes have a patented SimplySafe seal that will show signs of tampering, safeguarding you against unauthorized opening
Each white envelope is made from 24 lb white wove paper with an interior security tint pattern so you can't see what's inside; ideal for obscuring sensitive information & protecting critical documents
These self seal envelopes have a Release & Seal peel strip; peel off the paper strip and press down for a permanent seal; it's simple, clean, and sanitary with no moisture required
Double window envelopes display just the sender & receiver addresses and keep sensitive information out of view; top window: 13/16" x 3-1/2"; bottom window: 1" x 4"; envelope: 3-5/8" x 8-5/8"

Last update on 2024-01-23 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: Why are double window envelopes good for business?

A: Ideal for business mailings, these #9 double-window white envelopes work well for 8.5-by-11-inch statements and invoices. The envelopes provide an interior security tint that prevents documents from being read through the envelope, even when held up to the light.

Q: What are the different types of business envelopes?

A: Window envelopes are very useful for business correspondence. They come in several sizes and with several window designs that make them both more secure and easier to ship. The most common are number 9 and number 10 envelopes, and either a single-window or double-window design. Window envelopes are very useful for business correspondence.

Q: How big is the double window on Amazon?

A: Double windows 3/8-inch from the left to show sender info (2 inches from bottom) and recipient info (1/2 inch from bottom) To see our price, add these items to your cart. Choose items to buy together. In Stock. FREE Shipping on orders over $25.00. In Stock. FREE Shipping on orders over $25.00. In Stock.