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

2,194 Reviews Scanned

SaleRank No. #1
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. #2
#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.
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
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
Rank No. #5
500#9 Single Window Security Envelopes, Thick Gummed Seal, Designed for Secure Mailing of Payroll Checks, QuickBooks Invoices, Return Mail, and Business Statements - 3 7/8 x 8 7/8
  • Perfect for mailing payroll checks, QuickBooks invoices, billing statements, confidential documents, and other business mail.
  • No need for tape or glue sticks as our strong gummed seal creates a hassle free and safe seal for all your sensitive documents.
  • Provides complete business mail security: your professional business mail will be completely hidden with our dark security tint design
  • Create professional looking mail with the added security of a single window envelope. Your business mail recipient address will show through the single window and you can quickly print your return address or add return address labels
  • Tamper proof design with our hot melt glue adhesive manufacturing process that allows the glue to penetrate the envelope, thus causing the envelope to tear if you open after sealing
Rank No. #6
Office Depot® Brand Window Envelopes, Window On Bottom Left, 9, 3 7/8" x 8 7/8", White, Box of 500
  • Ensure your mailings get to their intended destination. These single-window envelopes will let the typed address show through, so your correspondence gets to the right place, right on time.
  • Fully gummed flap provides a strong, dependable seal.
  • Addresses appear through window - no need to hand-address.
  • Box of 500 envelopes.
Rank No. #7
500#9 Double Window SELF Seal Security Envelopes - for Invoices, Statements & Documents, Security Tinted - Size 3-7/8 x 8-7/8-24 LB - 500 Count (30139)
  • #9 DOUBLE WINDOW QUICK SEAL SECURITY ENVELOPES; tired of cheap thin, easily torn envelopes? Aimoh's#9 Security Envelopes are the perfect solution, with premium security tint, extra large, easily read dual front windows and super secure quick seal adhesive
  • SECURITY TINT; forget thin, easily read envelopes these premium #9 Security Envelopes are designed with security tinted wave patterns which easily obscure details, numbers and other data within, perfect for mailing business statements and invoices while protecting sensitive information
  • DOUBLE WINDOWS; professional, easily read double front windows suitable for standard business and legal mailings, advertising campaigns and many more, eliminating constantly printing and hand writing addresses, Each envelope contains two front windows, a 1-3/16" X 3-1/2" top window positioned 3/8" from the left and 2" from the bottom and the bottom 1" X 4" window is 3/8" from the left and 1/2" from the bottom
  • QUICK SEAL ADHESIVE; Aimoh's #9 Envelopes use ultra secure, quick seal adhesive to create a full, super secure seal across each envelope’s width that won’t easily open or tear as with cheaper gummed seals, perfect for larger and thicker documents
  • LONG LASTING SUPPLY; ideal for everyday business use and professional mass mailings, each box of these premium #9 Security Envelopes provide a super long lasting 500 envelope supply, for the best value on the market!
SaleRank No. #8
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. #9
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. #10
Office Depot Double-Window Envelopes, #9 (3 7/8in. x 8 7/8in.), White, Moisture Seal, Box Of 500, 12040
  • Make mailing labels a thing of the past in your office. Great for businesses that use check-writing software and computer-generated forms, Office Depot double-window, gummed envelopes let you display addresses from the inside.
  • With Office Depot double-window, white envelopes, there's no need to write out labels! Two-window envelopes display the return and mailing address.
  • Feature a security-tinted inside for privacy and confidentiality.
  • Moisture seal keeps contents secure.
  • Box of 500 envelopes.
Rank No. #11
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. #12
Office Depot All-Purpose Envelopes, #9 (3 7/8in. x 8 7/8in.), White, Box Of 500, 77115
  • Send mail to clients, family and friends with a box of all-purpose envelopes from Office Depot Brand. Whether you're writing personalized letters or doling out invoices, white standard envelopes offer a crisp, clean look to help you maintain a professional appearance.
  • All-purpose envelopes are ideal for personal and business correspondence.
  • Fully gummed flap promotes a strong, dependable seal.
  • Office Depot Brand all-purpose white #9 envelopes are made with crisp 24-lb wove.
  • Box of 500 envelopes.
Rank No. #13
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
Rank No. #14
500 Cashier Depot # 9 Business Envelopes with Left Window, 3 7/8 x 8 7/8, Tinted, Gum Flap, 24lb White, 500/Box. (500 Envelopes)
  • No. 9 Business Security Envelopes 3 7/8 x 8 7/8 with Left Window
  • 500 Envelopes per Box
  • Standard (1-1/8" x 4-1/2" Window) positioned 7/8" from left and 1/2" from bottom
  • Gummed Flap
  • Sturdy 24lb White Paper
Rank No. #15
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. #16
700 Pack #9 Double Window Envelopes Self-Seal - No. 9 Security Envelopes - for Invoices, Statements, and Documents - Size 3-7/8 x 8-7/8 Inches - White - 24LB
  • 700 PACK - 700 count per box is a cost-effective choice for small businesses, offices, and homes with frequent mailing needs. And ensures that you have enough mailing envelopes to last for a while.
  • SECURITY TINTED - Our #9 envelopes feature an interior security tint that ensures your content stays private during transit.
  • DUAL WINDOW DESIGN - Each No.9 envelope contains two front windows, a 1-3/16" X 3-1/2" top window positioned 3/8" from the left and 2" from the bottom and the bottom 1" X 4" window 3/8" from the left and 1/2" from the bottom.
  • EASY TO USE - No more licking envelopes! Our #9 double window envelopes feature a Peel & Seal closure(STRONG ADHESIVE STRIP)that requires no moisture, making it quick and easy to send your confidential documents securely.
  • HIGH QUALITY - Made from 24 lb. white woven paper, envelopes are strong and durable. #9 secure envelope is perfect for mailing invoices and business statements.
Rank No. #18
Columbian #9 Security Envelopes, No Window, Self Seal, for Invoices & QuickBooks Statements, 3-7/8 x 8-7/8 Inches, 24 lb White, 500/Box (COLO183)
  • Large supply of 500 white #9 business envelopes protect your customers’ sensitive data; a reflex blue pattern safely obscures what’s inside; windowless 3 7/8 x 8 7/8 design for invoices & statements
  • Release & Seal envelopes seal without moisture to save you loads of time; protective strips give envelopes a longer shelf life by shielding the adhesive from dust
  • Guard your clients personal information with a security tint that makes envelopes hard to see through; a dense security pattern scrambles the appearance of text even when held to light
  • For QuickBooks statements, invoices, or any sensitive business or legal correspondence; a windowless design gives you greater flexibility and protection from prying eyes
  • An excellent value; get 500 bright white 24-lb envelopes that make an impression for business mailings and personal correspondence
Rank No. #19
LUXPaper 9 x 12 Open End Window Envelopes | Peel & Press | White | 28lb. Text | 50 Qty
  • OPEN-END WINDOW ENVELOPES: These large envelopes are perfect for sending letters, invoices, statements, and any other professional mail. You’ll save the time and expense of separately addressing individual envelopes, making them perfect for business correspondence. Simply position the address to show through the window.
  • PEEL & PRESS SEAL: The self-seal design of these envelopes is perfect for anyone who doesn’t want to lick or use a moistener on every single envelope — it’s a huge time-saver! Simply peel off the protective strip, press, and seal. It couldn’t be easier! This type of adhesive is great for business applications, wedding announcements, and personal notes.
  • PRINTABLE & CUSTOMIZABLE: If you want to customize or label your envelopes with zero hassle, you’re in luck! These envelopes are printer friendly, so you can use your home laser or inkjet printer to address them. They are printable on both digital and offset commercial printers. No need to worry about smudging or jamming because these envelopes are made for compatibility with most printer models.
  • CLASSIC COLOR: If you want a high-quality envelope, this is the item for you. Made from 28 lb. text-weight paper stock, these envelopes are thicker and more durable than printer paper and will protect whatever is inside. If this shade of white isn’t right for you, we offer these envelopes in a variety of other color options as well.
  • DURABLE & RELIABLE: Made from heavyweight LUX paper stock with a sturdy construction, these envelopes are thick and durable, making them perfect for things like letters, professional mailings, personal mail, or catalogs. No matter what you decide to use these envelopes for, whatever is inside is sure to arrive in perfect condition.
Rank No. #20
500#9 Security Self-Seal Envelopes, Premium Security Tint Pattern, Ultra Strong Quick-Seal Closure - No Window, EnveGuard, Size 3-7/8 x 8-7/8 Inches - White - 24 LB - 500 Count (30138)
  • #9 SECURITY TINTED SELF SEAL ENVELOPES; forget cheap envelopes that easily split and aren't suitable for secure mailing, our #9 envelopes are designed with a premium security tint to protect sensitive information and a super strong SELF-SEAL strip, perfect for documents and invoices
  • PREMIUM SECURITY TINTED PATTERN; our #9 envelopes are designed with a premium security printed design to protect contents and sensitive information, perfect for secure business and legal mailing while protecting sensitive information
  • WINDOWLESS DESIGN; envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless front panel for easy printing, labeling or hand-addressing, perfect for quick, mass business mailings
  • QUICK-SEAL CLOSURE; our #9 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 larger documents without splitting
  • LONG LASTING SUPPLY; ideal for everyday business use and professional mass mailings, each box of these premium #9 Security Envelopes provide a super long lasting 500 envelope supply, for the best value on the market!

Last update on 2023-08-07 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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