--- product_id: 447022141 title: "Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8\" x 8-7/8\", Durable 24 lb White Paper" brand: "columbian" price: "€ 48.07" currency: EUR in_stock: true category: "Columbian" url: https://www.desertcart.ie/products/447022141-columbian-9-security-envelopes-500-pack-no-window-self-seal store_origin: IE region: Ireland --- # Bulk 500-pack for uninterrupted mailing Blue security tint blocks visibility Self-seal closure saves time Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper **Brand:** columbian **Price:** € 48.07 **Availability:** βœ… In Stock ## Summary > πŸ” Secure your mail, seal your success. ## Quick Answers - **What is this?** Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper by columbian - **How much does it cost?** € 48.07 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/447022141-columbian-9-security-envelopes-500-pack-no-window-self-seal) ## Best For - columbian enthusiasts ## Why This Product - Trusted columbian brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Seal in Seconds ⏱️:** Peel-and-press self-seal closure eliminates licking, speeding up your workflow. - β€’ **Professional Presence πŸ“„:** Durable 24 lb white wove paper with side seams delivers a crisp, polished look. - β€’ **Bulk Ready for Business πŸ“¦:** 500 envelopes per box means no downtimeβ€”always ready for your next mailing. - β€’ **Confidentiality on Lock πŸ”’:** Blue security tint with safety pattern keeps sensitive info private, even under light. - β€’ **Perfect Fit for Business Mail πŸ“:** Sized 3-7/8" x 8-7/8" to snugly hold folded 8.5x11 documents without waste. ## Overview Columbian #9 Security Envelopes offer a reliable, professional solution for business mailings requiring privacy. Featuring a blue security tint and safety pattern to block prying eyes, these 24 lb white paper envelopes combine durability with a sleek appearance. The self-seal adhesive closure streamlines mailing by eliminating moisture-based sealing, while the bulk 500-pack ensures your office stays stocked and efficient. Sized to perfectly fit folded standard documents, these envelopes balance security, convenience, and value for busy professionals. ## Description Columbian #9 Security Envelopes are designed for everyday mailings that require privacy. These white envelopes can be used for anything from contracts and legal documents to personal letters and school forms. \nTo help protect confidential information, each envelope features a blue security tint with an interior safety pattern that limits visibility through the paper. This added layer of privacy helps prevent sensitive details from being read during handling or delivery, even when held up to light. The durable 24 lb white wove paper and side seams provide durability during handling and mailing. These self seal envelopes are time-savers. The Release & Seal peel-and-press adhesive creates a strong seal without moisture, helping streamline workflows and keep hands, desks, and equipment clean. The adhesive remains protected until use, making these envelopes reliable even after extended storage.\n\nWith 500 envelopes per box, this bulk pack supports consistent mailing needs without frequent restocking. Columbian Security Envelopes offer a smart solution for businesses that value privacy, efficiency, and a polished presentation in every mailing. (Manufacturer Item Number: COLO183) ## Features - PROTECT SENSITIVE DETAILS: A blue security tint with safety pattern blocks visibility, helping safeguard confidential information from prying eyes, even when held up to light - IDEAL FOR BUSINESS & BILLING MAIL: #9 envelopes are commonly used for invoices, billing paperwork, tax documents, and accounting records requiring privacy - SAVE TIME WITH SELF SEAL ENVELOPES: The Release & Seal self-seal closure lets you peel and press for a strong seal, eliminating the need to lick envelopes or use wet sponges - PRESENT A PROFESSIONAL IMAGE: Thick 24 lb white wove paper with side seams creates a crisp, high-quality look that reflects well on your business and holds up in transit - STOCK-UP VALUE PACK: 500 business envelopes per box keep offices and home businesses ready to mail; #9 envelopes measure 3-7/8 x 8-7/8 inches for everyday business needs ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09XFTJ4S8 | | Additional Features | Self-Adhesive Closure | | Best Sellers Rank | #15,317 in Office Products ( See Top 100 in Office Products ) #66 in Business Mailing Envelopes | | Brand Name | Columbian | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.6 4.6 out of 5 stars (155) | | Item Dimensions L x W | 8.88"L x 3.88"W | | Item Shape | Rectangular | | Item Weight | 5 pounds | | Manufacturer | TOPS Products | | Material Type | Paper | | Number of Items | 500 | | Occasion | Business | | Occasion Type | Business | | Recommended Uses For Product | Security | | Size | #9 | | Style | Box | | UPC | 026900001831 | | Unit Count | 500 Count | ## Product Details - **Brand:** Columbian - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paper - **Occasion:** Business ## Images ![Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper - Image 1](https://m.media-amazon.com/images/I/41mpbOGsn4L.jpg) ![Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper - Image 2](https://m.media-amazon.com/images/I/31V-3z5npGL.jpg) ![Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper - Image 3](https://m.media-amazon.com/images/I/513SCVLhqNL.jpg) ![Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper - Image 4](https://m.media-amazon.com/images/I/31g5t0V3SXL.jpg) ![Columbian #9 Security Envelopes, 500 Pack, No Window Self Seal Envelopes for Business Mailings, 3-7/8" x 8-7/8", Durable 24 lb White Paper - Image 5](https://m.media-amazon.com/images/I/31A2dy05GrL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - 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) - Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, Security Tinted, White Paper, 24 lb, 500 Count - Amazon Basics #10 Security-Tinted Self-Seal Business Envelopes with Left Window, Peel & Seal Closure - 500-Pack, White --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/447022141-columbian-9-security-envelopes-500-pack-no-window-self-seal](https://www.desertcart.ie/products/447022141-columbian-9-security-envelopes-500-pack-no-window-self-seal) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-09-27*