---
product_id: 38965827
title: "500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch"
brand: "blue summit supplies"
price: "C$3697"
currency: NIO
in_stock: true
reviews_count: 9
url: https://www.desertcart.ni/products/38965827-500-no-10-gummed-double-window-security-envelopes-perfect-size
store_origin: NI
region: Nicaragua
---

# Size 4 1/8 x 9 ½ in Security Tint Double-Window Design 500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch

**Brand:** blue summit supplies
**Price:** C$3697
**Availability:** ✅ In Stock

## Summary

> 📬 Elevate Your Mailing Game—Where Security Meets Style!

## Quick Answers

- **What is this?** 500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch by blue summit supplies
- **How much does it cost?** C$3697 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/38965827-500-no-10-gummed-double-window-security-envelopes-perfect-size)

## Best For

- blue summit supplies enthusiasts

## Why This Product

- Trusted blue summit supplies brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Use:** Perfectly sized for invoices, checks, and return envelopes—streamline your mailing process!
- • **Gummed Seal Power:** Just moisten to create a strong, lasting seal that ensures your documents stay secure.
- • **Secure Your Business:** Experience peace of mind with our dark security tint that keeps your mail confidential.
- • **Effortless Efficiency:** Quickly stuff multiple invoices and statements without the hassle of labels or stamps.
- • **Professional Presentation:** Create a polished look for your business correspondence with our sleek design.

## Overview

The 500 No. 10 Gummed Double Window Security Envelopes are designed for the modern professional, offering a perfect size of 4 1/8 x 9 ½ inches for various business documents. With a secure gummed seal and a dark security tint, these envelopes ensure your sensitive information remains confidential while providing a polished look for your correspondence. Ideal for invoices, billing statements, and checks, they save you time and effort in the mailing process.

## Description

500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch

## Features

- Perfect for mailing Invoices, QuickBooks Invoices, billing statements, checks, and other business mail. Your return and sender address will line up perfectly
- Just moisten or lick and seal for a strong lasting seal. Our Cost Effective gummed seal design will quickly and easily create a strong seal for completely secure business mail.
- No need to spend time and money stamping, adding return labels, or spending extra money on custom envelopes, just quickly slide in your business mail to create professional looking business mail
- Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker.
- Provides complete business mail security: your business mail will be completely hidden with our dark security tint design

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Additional Features | Security Tint |
| Recommended Uses For Product | Security |
| Number of Items | 10 |
| Apparel Closure Type | Gummed |
| Style Name | Double-Window |
| Occasion Type | Business |
| Shape | Rectangular |
| Color | white |
| Size Name | 4 1/8 x 9 ½ inches |
| Item Dimensions L x W | 8"L x 4"W |
| Material Type | Paper |

## Images

![500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch - Image 1](https://m.media-amazon.com/images/I/711ia1jChOL.jpg)
![500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch - Image 2](https://m.media-amazon.com/images/I/61uyT95R+sL.jpg)
![500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch - Image 3](https://m.media-amazon.com/images/I/71+MBGmPSUL.jpg)
![500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch - Image 4](https://m.media-amazon.com/images/I/611X4sC6ThL.jpg)
![500 No. 10 Gummed Double Window Security Envelopes - Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes - Number 10 Size 4 1/8 X 9 ½ Inch - Image 5](https://m.media-amazon.com/images/I/41ixqkJxr0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Fast delivery
  

*by S***D on Reviewed in the United States on June 1, 2023*

Delivered in less than 24 hours,  but paid for the regular shipping. We were lucky enougn to be close  to the distribution center, I guess. Envelopes all came in good shape with none of the seals sticking.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good product
  

*by L***P on Reviewed in the United States on January 15, 2020*

Have ordered these envelopes before, and have never had a problem with them.  Will definitely order them again in the future.  Great price!

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Works with Quickbooks Invoices but not checks.
  

*by J***I on Reviewed in the United States on March 26, 2018*

Works well with our Quickbook invoices.  We did not want to alter our invoice template so we just need to pay a little more attention to folding to have the upper window (return address) align.  The bottom window is perfect.  These do not work with our checks but really, who writes checks much anymore? lol  For the price, we will happily adjust our invoice folding techniques and save HUNDREDS of dollars on envelopes throughout the year.  Great deal, good product.  Received the 4 boxes in lightning fast time!

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**Shop now:** [https://www.desertcart.ni/products/38965827-500-no-10-gummed-double-window-security-envelopes-perfect-size](https://www.desertcart.ni/products/38965827-500-no-10-gummed-double-window-security-envelopes-perfect-size)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-11*