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  • Columbian Envelopes, #9 Double Window Security, 500 Per Box, SimplySafe Tamper Evident, Pull Strip, Peel and Seal, White, 3-7/8" x 8-7/8" for Invoices and Statements
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Columbian Envelopes, #9 Double Window Security, 500 Per Box, SimplySafe Tamper Evident, Pull Strip, Peel and Seal, White, 3-7/8" x 8-7/8" for Invoices and Statements

4.5 out of 5 stars (186)
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About this item

  • DOUBLE-WINDOW DESIGN – Displays both sender and recipient addresses clearly without the need for extra labels, ideal for billing, statements, and invoices.
  • SECURITY-TINTED INTERIOR – Features a scrambled blue pattern that obscures sensitive information to protect privacy during mailing.
  • SIMPLYSAFE TAMPER-EVIDENT SEAL – Patented closure shows visible signs of tampering, ensuring your mail stays secure until it reaches the recipient.
  • PEEL & SEAL CLOSURE WITH PULL STRIP – Release & Seal strip allows quick, moisture-free sealing; pull tab makes opening easy without damaging contents.
  • BULK 500-PACK – Durable 24 lb white wove envelopes with side seams for a smooth, professional look; a smart stock-up choice for offices, schools, and businesses.
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Frequently bought together

This item: Columbian Envelopes, #9 Double Window Security, 500 Per Box, SimplySafe Tamper Evident, Pull Strip, Peel and Seal, White, 3-7/8" x 8-7/8" for Invoices and Statements
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Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count
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Columbian Envelopes, #10 Double Window Security, Redi-Seal Self-Seal, White, 4-1/8" x 9-1/2", Security-Tinted Interior, 500 P
$48.82
Get it by Tuesday, Jan 6
In Stock
Ships from and sold by 鶹.ca.
Total price:$00
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Product information

Technical Details

Manufacturer ‎TOPS Products
Place of Business ‎WARRENVILLE, IL, 60555 US
Brand ‎Columbian
Model number ‎COLO166
Colour ‎White
Closure ‎Self-Seal
Shape ‎Rectangular
Material Type ‎Paper
Number of Items ‎500
Size ‎#9
Sheet Size ‎3-7/8 x 8-7/8
Manufacturer Part Number ‎COLO166

Additional Information

ASIN B07VGNSLLN
Customer Reviews
4.5 out of 5 stars (186)

4.5 out of 5 stars
鶹 Rank
Date First Available July 19 2019

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

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Product description

Columbian #9 Double-Window Security Envelopes combine convenience, professionalism, and protection for your most important mailings. Measuring 3-7/8" x 8-7/8", these envelopes feature two precisely placed windows that clearly display both sender and recipient addresses—perfect for invoices, statements, and business correspondence. The interior is printed with a scrambled blue security tint to keep contents confidential. Each envelope includes the patented SimplySafe tamper-evident seal, which provides visible proof if opened before delivery. The Release & Seal strip allows for fast, moisture-free sealing, while the pull strip ensures easy opening without tearing important documents inside. Crafted from durable 24 lb white wove paper with side seams for a smooth back panel, these envelopes present a polished, professional appearance. The bulk box of 500 makes them a cost-effective and essential choice for small businesses, offices, and organizations that send high volumes of mail.

From the manufacturer

About Us

TOPS Products makes the tools you need to learn, plan and grow, from your first day of school to your first job or business.

Our consumer-recognizable brands offer solutions designed to keep you organized, efficient and creative in all areas of your life, from school to your office.

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