--- product_id: 317332442 title: "Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8\" x 8-5/8\", Durable 24 lb White Paper" brand: "columbian" price: "€ 65.89" currency: EUR in_stock: true category: "Columbian" url: https://www.desertcart.ie/products/317332442-columbian-8-5-8-security-envelopes-500-pack-double-window store_origin: IE region: Ireland --- # 3-5/8" x 8-5/8" perfect fit Tamper-evident seal Security tint blocks visibility Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper **Brand:** columbian **Price:** € 65.89 **Availability:** βœ… In Stock ## Summary > πŸ” Seal your success with every send! ## Quick Answers - **What is this?** Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper by columbian - **How much does it cost?** € 65.89 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/317332442-columbian-8-5-8-security-envelopes-500-pack-double-window) ## 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€’ **Privacy-First Security Tint:** Blue patterned interior ensures sensitive info stays confidential during transit. - β€’ **Precision Fit for QuickBooks Checks:** Double window design aligns perfectly with standard business checks for seamless mailing. - β€’ **Bulk 500-Pack for Consistent Workflow:** Never run outβ€”perfect for busy offices, schools, and small businesses scaling their mail operations. - β€’ **Tamper-Evident Seal for Ultimate Security:** Simply peel and press to lock in contents with a clear tamper-proof indicator. - β€’ **Durable 24 lb Paper with Smooth Side Seams:** Professional-grade, fold-free back panel ideal for custom printing and branding. ## Overview Columbian #8-5/8 Security Envelopes come in a bulk pack of 500, featuring double windows sized for QuickBooks checks, a tamper-evident self-seal closure, and a blue security tint interior to protect sensitive information. Crafted from durable 24 lb white wove paper with side seams for a smooth, professional finish, these envelopes streamline business mailings while safeguarding confidential documents. ## Description Columbian #8-5/8 Double Window Envelopes are built for businesses that rely on accurate, professional check mailing every day. These white security envelopes are sized specifically for QuickBooks and other generated checks, allowing only addresses to appear in the windows. The top window measures 13/16 x 3-1/2 inches; 5/8 inches from the left and 2-1/4 inches from the bottom. The bottom window measures 1 x 4 inches, 5/8 inches from the left and 5/8 inches from the bottom.\n\nTo help protect sensitive financial information, each envelope features a blue security tint with a printed privacy pattern. This internal design limits visibility through the paper, reducing the risk of confidential data being read during handling, sorting, or delivery. Each envelope features a SimplySafe tamper-evident seal that clearly reveals if the envelope has been opened, helping protect sensitive contents from unauthorized access. It’s a simple but effective safeguard when you're sending checks, vendor payments, or account documents. \n\nThe durable 24 lb white wove paper and side seams provide durability during mailing while maintaining a high-quality finish for both small offices and high-volume mailrooms. Mailing efficiency is improved with self seal business envelopes. 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: COLO156) ## Features - Get a jumbo box of 500 Columbian self seal double window #8 5/8 envelopes (3-5/8" x 8-5/8") each with a security tinted interior and easy peel off Release and Seal closure - These self seal envelopes have a Release and 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 - Security envelopes have a strong security tint pattern so you can't see what's inside; ideal for obscuring more sensitive information and protecting critical documents - Side seam mailing envelopes allow for a smooth, fold-free back panel for printing graphics, logos, and more; durable 24 lb white wove paper provides a professional look - Stock up on these envelope 500 packs so you always have some on hand; a great buy for small businesses, offices, and schools - Top Window: 13/16" x 3-1/2"; 5/8" from the left; 2-1/4" from the bottom; Bottom Window: 1" x 4"; 5/8" from the left; 5/8" from the bottom ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07VHPNZWV | | Additional Features | Security Tint, Self-Adhesive Closure | | Best Sellers Rank | #6,959 in Office Products ( See Top 100 in Office Products ) #33 in Business Mailing Envelopes | | Brand Name | Columbian | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.6 4.6 out of 5 stars (634) | | Global Trade Identification Number | 00026900015609 | | Item Dimensions L x W | 1"L x 3"W | | Item Shape | Rectangular | | Item Type Name | Business envelopes | | Manufacturer | TOPS Products | | Material Type | Paper | | Number of Items | 500 | | Occasion | Business/Professional | | Recommended Uses For Product | Security | | Size | #8 5/8 | | Style | Self Sealing | | UPC | 026900015609 | | Unit Count | 500 Count | ## Product Details - **Brand:** Columbian - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paper - **Occasion:** Business/Professional ## Images ![Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper - Image 1](https://m.media-amazon.com/images/I/71VPP07rHcL.jpg) ![Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper - Image 2](https://m.media-amazon.com/images/I/713X0gsaZaL.jpg) ![Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper - Image 3](https://m.media-amazon.com/images/I/71aaDu8shGL.jpg) ![Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper - Image 4](https://m.media-amazon.com/images/I/81+83CGPmsL.jpg) ![Columbian #8-5/8 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for QuickBooks Checks and Business Mailings, Tamper Evident, 3-5/8" x 8-5/8", Durable 24 lb White Paper - Image 5](https://m.media-amazon.com/images/I/71VZFe2k+3L.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - 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) - Columbian #10 Security Envelopes, 500/Box, No Window, 4-1/8 x 9-1/2 Inches, Release & Seal Self Seal, White (COLO151) - Amazon Basics 1/3-Cut Tab, Assorted Positions File Folders, Letter Size, Manila - Pack of 100 --- ## 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/317332442-columbian-8-5-8-security-envelopes-500-pack-double-window](https://www.desertcart.ie/products/317332442-columbian-8-5-8-security-envelopes-500-pack-double-window) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-07-02*