Columbian
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Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
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Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Keep your sensitive mail safe and organized with Columbian #10 Self-Seal Security Envelopes.
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Item #: 221236188

Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24

87% of respondents would recommend this to a friend

Item #: 221236188

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Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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3K+ bought

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Order now and get it around Thursday, October 01
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Keep your sensitive mail safe and organized with Columbian #10 Self-Seal Security Envelopes.
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What Stands Out

Self-Seal Design
The self-seal feature ensures quick and easy closures, saving time and enhancing security for both personal and professional mailing tasks.
Durable Construction
Crafted from 24 lb white paper, these envelopes offer strength and reliability, preventing tears and ensuring protection for documents during transit.
Versatile Use
Designed for home, school, and business mailings, these envelopes cater to a broad audience, making them an ideal choice for various mailing needs.

Product Details

Buy Columbian #10 Security Envelopes online at Ubuy Tonga. These self-seal envelopes are perfect for business documents. Inkjet printer compatible. Buy now!
Brand NameColumbian
Model NameCOLO151
ManufacturerTOPS Products
Unit Count1 Count
UPC026900561519
Item Dimensions L x W9.5"L x 4.13"W (24.1 x 10.5 cm)
Size500 Count
ColorWhite
OccasionBusiness
StyleClassic
Item ShapeRectangular
Occasion TypeHome
Closure TypeSelf-Seal
Number of Items500
Additional FeaturesSecurity Tint, Self-Adhesive Closure
Recommended Uses For ProductSecurity
Material TypePaper
BrandColumbian
MaterialPaper

Who Should Buy?

Suitable For
  • Home Office Use

    Ideal for remote workers needing to send documents discreetly and securely without dealing with licking envelopes.

  • Educational Institutions

    Perfect for schools or universities sending out confidential communications or report cards to students and parents.

  • Small Businesses

    Great for small business owners who frequently send invoices or statements requiring a professional presentation.

Not Suitable For
  • High-Volume Mailing

    Not suitable for large mailing tasks requiring faster processing, as self-seal envelopes may be slower than gummed options.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are Columbian #10 Security Envelopes used for?

    Answer: Columbian #10 Security Envelopes are ideal for sending sensitive documents such as invoices, contracts, and personal correspondence. The security design provides an additional layer of protection, ensuring that contents remain confidential. These envelopes are great for both personal and professional settings, making them a favored choice for businesses, law firms, and accountants who prioritize privacy.
  • Question: How do the Release & Seal feature work on these envelopes?

    Answer: The Release & Seal feature allows for quick and secure sealing of the envelope without the need for moisture. Simply peel off the protective strip and press the flap down. This method ensures a strong seal while also being convenient for users who need to seal multiple envelopes at once, such as during mailings or document distributions, saving both time and effort.
  • Question: Are these envelopes eco-friendly?

    Answer: While the primary function of the Columbian #10 Security Envelopes is to provide secure mailing solutions, it is important to consider the paper quality and manufacturing practices. Some users may look for recyclable material options. To confirm the environmental impact, check the product specifications or inquire with suppliers. Businesses conscious of sustainability can share information about their environmentally-friendly practices.
  • Question: What size are the Columbian #10 Security Envelopes?

    Answer: The Columbian #10 Security Envelopes measure 4-18 x 9-12 inches, making them a suitable choice for standard letter-sized documents. This size is perfect for sending business letters, legal documents, and invoices, fitting comfortably with minimal folding required. Ideal for office use, these envelopes ensure that your documents arrive in pristine condition.
  • Question: Do these envelopes have a security tint?

    Answer: Yes, Columbian #10 Security Envelopes feature a security tint that enhances document privacy. The tinted interior makes it difficult to see the contents through the envelope, providing added peace of mind for those sending sensitive information. This feature is particularly useful for businesses handling confidential client information or personal data.
  • Question: How many envelopes come in a box?

    Answer: Each box of Columbian #10 Security Envelopes contains 500 envelopes, which is ideal for high-volume mailing needs. This bulk packaging is especially beneficial for offices, schools, and businesses that frequently send out documents. It reduces the need for frequent reordering, ensuring you always have supplies on hand for large mailings.
  • Question: Can I print on these envelopes?

    Answer: Columbian #10 Security Envelopes are designed to be compatible with most printers. You can print addresses, labels, or logos directly on the envelope’s surface. This makes them a great option for businesses looking to enhance their brand visibility while maintaining professionalism in their mail-outs. Always perform a test print to ensure alignment and print quality before proceeding with large batches.
  • Question: What is the advantage of using self-seal envelopes?

    Answer: The self-seal feature of Columbian #10 Security Envelopes offers numerous advantages, including convenience and efficiency. Users can quickly seal multiple envelopes without the need for moisture or additional supplies. This feature is particularly helpful for individuals or organizations tasked with largescale mailings, as it streamlines the process and ensures secure closure with minimal effort.
  • Question: Are these envelopes available in different colors?

    Answer: Columbian #10 Security Envelopes are primarily offered in white, which is a standard choice for professional mailing. However, depending on supplier options, other colors may be available through retailers. If you're looking for specific colors for branding or personal preference, it's advisable to explore various suppliers or check with local office supply stores.
  • Question: Where can I buy Columbian #10 Security Envelopes, 500Box, No Window, 4-18 x 9-12 Inches, Release & Seal Self Seal, White COLO151?

    Answer: You can buy Columbian #10 Security Envelopes through Ubuy in Tonga. Ubuy offers a wide selection of office supplies, including security envelopes, making it a suitable option for both personal and business needs. Their platform is user-friendly and offers detailed product descriptions to ensure you find the right envelopes for your mailing requirements.

Columbian Business Envelopes Editorial Review

Columbian #10 Security Envelopes, 100 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper offer a reliable solution for secure document mailing. The self-seal feature makes these envelopes an exceptional choice for those sending a high volume of mail, as the adhesive sticks on the first press, avoiding the hassle of licking or waiting for glue to set. Customers appreciate the paper quality and security tint, which ensures the contents remain private. With 100 envelopes per pack, these are ideal for regular users looking for convenience without compromising on sturdiness.

Customer Reviews & Ratings

1577 customers ratings
  • 5 Star
    86%
  • 4 Star
    9%
  • 3 Star
    4%
  • 2 Star
    0%
  • 1 Star
    1%

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Pros

  • Self-sealing feature works effectively and reliably
  • Security tint provides extra privacy for contents
  • Durable paper that resists tearing during transit
  • Standard #10 size suitable for various documents
  • Great value for bulk mailing needs

Cons

  • May not be the best choice for specialized mailing needs

Platform Trust & Buyer Confidence

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4.2/5 9477 reviews
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Jasmin
Verified buyer

“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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Anke
Verified buyer

“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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Hazel
Verified buyer

“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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Opaleye
Verified buyer

“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

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Order now and get it around Thursday, October 01

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Fastest cross-border delivery

Features & Benefits

  • Perfect for sending sensitive documents such as checks and invoices.
  • Enhanced security with a blue safety pattern that protects information.
  • User-friendly Redi-Strip self-seal closure for a mess-free seal.
  • Crafted from durable 24 lb white wove paper for professional quality.
  • Convenient box of 100 envelopes ensures a reliable supply.
  • Ideal dimensions of 9-1/2 inches x 4-1/8 inches for various mailing needs.

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