---
product_id: 519879118
title: "#10 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices, QuickBooks Checks and Business Mailings, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper"
brand: "columbian"
price: "€ 105.37"
currency: EUR
in_stock: true
reviews_count: 13
category: "Columbian"
url: https://www.desertcart.com.cy/products/519879118-10-security-envelopes-500-pack-double-window-self-seal-envelopes
store_origin: CY
region: Cyprus
---

# Self-seal adhesive for mess-free closure 4-1/8 x 9-1/2 inches perfect fit Blue security tint blocks prying eyes #10 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices, QuickBooks Checks and Business Mailings, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper

**Brand:** columbian
**Price:** € 105.37
**Availability:** ✅ In Stock

## Summary

> 📬 Seal your success with confidence and style!

## Quick Answers

- **What is this?** #10 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices, QuickBooks Checks and Business Mailings, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper by columbian
- **How much does it cost?** € 105.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/519879118-10-security-envelopes-500-pack-double-window-self-seal-envelopes)

## 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

- • **Blue Security Tint:** Safeguard confidential data even under light scrutiny
- • **Bulk 500-Pack Value:** Stay stocked and ready for all your business mailing needs
- • **Mess-Free Self-Seal:** Press-to-seal flap eliminates peel-strip waste and licking
- • **Precision Double Windows:** Show addresses clearly while keeping sensitive info private
- • **Professional Grade Paper:** Durable 24 lb white wove paper for a crisp, premium look

## Overview

Columbian #10 Security Envelopes come in a bulk 500-pack, featuring double windows perfectly sized for invoices and QuickBooks checks. Crafted from durable 24 lb white paper with a blue security tint, these envelopes protect sensitive information from prying eyes. The self-adhesive press-to-seal flap ensures a fast, mess-free closure, making them ideal for professional business mailings that demand both security and a polished presentation.

## Description

Columbian #10 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices, QuickBooks Checks and Business Mailings, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper

Review: Great product for the money!! - These envelopes are the best. The adhesive is good and they stay sealed. Great product and pricing.
Review: As described - As described

## Features

- #10 WINDOW ENVELOPES: Designed for invoices and statements from QuickBooks and other standard business software, these double window envelopes align perfectly so addresses show cleanly while amounts and data stay private
- SECURE MAILING ENVELOPES: A blue security tint with safety pattern blocks visibility, helping safeguard confidential information from prying eyes, even when held up to light
- FAST, MESS-FREE SELF SEAL ENVELOPES: Redi-Seal envelopes feature press-to-seal adhesive flaps that create a secure closure without peel-strip trash, licking envelopes, or the need for 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
- BULK VALUE PACK: Stock up on 500 security envelopes that keep offices, small businesses, schools and homes stocked and ready for consistent mailing needs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BVBQRM77 |
| Additional Features | Security Tint, Self-Adhesive Closure |
| Best Sellers Rank | #20,681 in Office Products ( See Top 100 in Office Products ) #67 in Business Mailing Envelopes |
| Brand | Columbian |
| Brand Name | Columbian |
| Closure Type | Self-Seal |
| Color | Blue,White |
| Customer Reviews | 4.3 out of 5 stars 116 Reviews |
| Item Dimensions L x W | 9.5"L x 4.13"W |
| Item Shape | Rectangular |
| Manufacturer | TOPS Products |
| Material | Paper |
| Material Type | Paper |
| Number of Items | 500 |
| Recommended Uses For Product | Security |
| Size | One Size |
| Special Feature | Security Tint, Self-Adhesive Closure |
| Style | Modern |
| UPC | 026900261341 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Columbian
- **Closure Type:** Self-Seal
- **Color:** Blue,White
- **Material:** Paper
- **Number of Items:** 500

## Images

![#10 Security Envelopes, 500 Pack, Double Window Self Seal Envelopes for Invoices, QuickBooks Checks and Business Mailings, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper - Image 1](https://m.media-amazon.com/images/I/71S-FlSVKwL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product for the money!!
*by M***Y on May 8, 2026*

These envelopes are the best. The adhesive is good and they stay sealed. Great product and pricing.

### ⭐⭐⭐⭐⭐ As described
*by M***S on July 23, 2026*

As described

### ⭐⭐⭐⭐⭐ Easy ordering! Quick delivery!
*by P***R on January 13, 2026*

These envelopes work so well for mass mailing! Quality in design makes them so dependable, no folds or stickiness.

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**Shop now:** [https://www.desertcart.com.cy/products/519879118-10-security-envelopes-500-pack-double-window-self-seal-envelopes](https://www.desertcart.com.cy/products/519879118-10-security-envelopes-500-pack-double-window-self-seal-envelopes)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-08-28*