---
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: "9524 kr"
currency: ISK
in_stock: true
reviews_count: 13
category: "Columbian"
url: https://www.desertcart.is/products/317332442-columbian-8-5-8-security-envelopes-500-pack-double-window
store_origin: IS
region: Iceland
---

# 3-5/8" x 8-5/8" perfect fit SimplySafe tamper-evident seal Security tinted interior 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:** 9524 kr
**Availability:** ✅ In Stock

## Summary

> 📬 Seal the deal with confidence—your mail’s new security MVP!

## 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?** 9524 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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

- • **Effortless Self-Seal Closure:** Release & Seal peel strip ensures a clean, moisture-free, and secure seal every time—no mess, no fuss.
- • **Confidentiality You Can Trust:** Blue security tint with privacy pattern blocks prying eyes, safeguarding sensitive financial info.
- • **Durable & Professional Presentation:** 24 lb white wove paper with side seams offers a sleek, fold-free back panel ideal for branding and printing.
- • **Precision Fit for QuickBooks Checks:** Double window design aligns perfectly with standard check layouts for seamless mailing.
- • **Bulk Supply for High-Volume Efficiency:** 500 envelopes per box keep your office stocked and ready, eliminating downtime and frequent reorders.

## Overview

Columbian #8 5/8 Security Envelopes deliver professional-grade privacy and efficiency with their double window design tailored for QuickBooks checks, tamper-evident self-seal closure, and security tinted interiors. Crafted from durable 24 lb white wove paper with side seams for a smooth, printable back, these envelopes come in a bulk pack of 500 to support high-volume mailing needs while protecting sensitive information from unauthorized access.

## 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)

Review: Neither Rain, Nor Snow, Nor Curious Neighbors—These Envelopes Mean Business. - If you’re sending out bills, statements, or anything that needs to stay official and confidential, the Columbian #9 Security Envelopes absolutely get the job done. These envelopes are sturdy, clean-looking, and the double security tint does exactly what it’s supposed to do—keeps prying eyes from seeing what’s inside. No hold-ups, no transparency issues, no cheap paper feel. Just solid, dependable envelopes that say, “Yes, this is important.” We use these regularly to get our billing out the door, and they’ve proven themselves over and over. They run smoothly through printers, seal well, and stack neatly—no curling, tearing, or weird jams that slow the office down. When you’re sending out a high volume of mail, little details like consistency and reliability matter, and these envelopes deliver every time. Beyond billing, these are perfect for invoices, statements, notices, collections, payroll stubs, service agreements, warranty cards, and even internal documents where privacy matters. They’re also great for professional service companies, property management, contractors, medical offices, accountants, and any business that mails sensitive paperwork regularly. It’s refreshing to find an office supply that just works—no fuss, no surprises. Columbian nailed it with these envelopes, and they’ve become a dependable staple in our day-to-day operations. Real-world use: D & D Pest Control Co. uses these envelopes regularly throughout Eastern North Carolina, and they’ve become our go-to choice for professional, secure outgoing mail. Bottom line: if you want your mail to look professional, stay private, and arrive intact, these envelopes are a no-brainer. We’ll definitely be reordering.
Review: Beautiful envelopes. - Thank you very much! Great product, arrived timely and perfectly, highly recommanded!

## 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 | #5,398 in Office Products ( See Top 100 in Office Products ) #30 in Business Mailing Envelopes |
| Brand Name | Columbian |
| Closure Type | Self-Seal |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (625) |
| 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)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Neither Rain, Nor Snow, Nor Curious Neighbors—These Envelopes Mean Business.
*by D***. on December 15, 2025*

If you’re sending out bills, statements, or anything that needs to stay official and confidential, the Columbian #9 Security Envelopes absolutely get the job done. These envelopes are sturdy, clean-looking, and the double security tint does exactly what it’s supposed to do—keeps prying eyes from seeing what’s inside. No hold-ups, no transparency issues, no cheap paper feel. Just solid, dependable envelopes that say, “Yes, this is important.” We use these regularly to get our billing out the door, and they’ve proven themselves over and over. They run smoothly through printers, seal well, and stack neatly—no curling, tearing, or weird jams that slow the office down. When you’re sending out a high volume of mail, little details like consistency and reliability matter, and these envelopes deliver every time. Beyond billing, these are perfect for invoices, statements, notices, collections, payroll stubs, service agreements, warranty cards, and even internal documents where privacy matters. They’re also great for professional service companies, property management, contractors, medical offices, accountants, and any business that mails sensitive paperwork regularly. It’s refreshing to find an office supply that just works—no fuss, no surprises. Columbian nailed it with these envelopes, and they’ve become a dependable staple in our day-to-day operations. Real-world use: D & D Pest Control Co. uses these envelopes regularly throughout Eastern North Carolina, and they’ve become our go-to choice for professional, secure outgoing mail. Bottom line: if you want your mail to look professional, stay private, and arrive intact, these envelopes are a no-brainer. We’ll definitely be reordering.

### ⭐⭐⭐⭐⭐ Beautiful envelopes.
*by A***M on December 8, 2025*

Thank you very much! Great product, arrived timely and perfectly, highly recommanded!

### ⭐⭐⭐⭐⭐ Perfect for business
*by K***. on October 1, 2025*

Purchased several times for my business. I like the opening strip feature. Great value for the quantity.

## 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

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-05-02*