---
product_id: 38559678
title: "500#8 Double Window Security Envelopes, Gummed | 3 5/8 x 8 11/16 in, Security Tint, Gummed Seal, for QuickBooks Checks, Business Mailings"
brand: "blue summit supplies"
price: "€ 128.37"
currency: EUR
in_stock: true
reviews_count: 13
category: "Blue Summit Supplies"
url: https://www.desertcart.com.cy/products/38559678-500-8-double-window-security-envelopes-gummed-3-5-8
store_origin: CY
region: Cyprus
---

# Perfect #8 size fit Bulk 500-pack for nonstop workflow Security tint blocks read-through 500#8 Double Window Security Envelopes, Gummed | 3 5/8 x 8 11/16 in, Security Tint, Gummed Seal, for QuickBooks Checks, Business Mailings

**Brand:** blue summit supplies
**Price:** € 128.37
**Availability:** ✅ In Stock

## Summary

> 📬 Seal the deal with security and style!

## Quick Answers

- **What is this?** 500#8 Double Window Security Envelopes, Gummed | 3 5/8 x 8 11/16 in, Security Tint, Gummed Seal, for QuickBooks Checks, Business Mailings by blue summit supplies
- **How much does it cost?** € 128.37 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/38559678-500-8-double-window-security-envelopes-gummed-3-5-8)

## 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

- • **Reliable Gummed Seal:** Moisture-activated flap guarantees airtight, tamper-proof closure.
- • **Double Window Clarity:** Displays both return and payee addresses—no labels, no hassle.
- • **Precision-Engineered Fit:** Tailored for QuickBooks checks, ensuring flawless alignment every time.
- • **Privacy-First Security Tint:** Protect sensitive info with inner tint that thwarts prying eyes.
- • **Bulk Supply for Business Flow:** 500 envelopes per pack to keep your accounts payable running smooth and uninterrupted.

## Overview

Blue Summit Supplies #8 Double Window Security Envelopes are precision-crafted for QuickBooks checks, featuring a double window for perfect address display, a privacy-enhancing security tint, and a traditional gummed seal. Offered in a bulk 500-pack of durable 24lb white paper, these envelopes streamline business mailing workflows with reliable, secure, and cost-effective performance.

## Description

desertcart.com : Blue Summit Supplies 500#8 Double Window Security Envelopes, Gummed | 3 5/8 x 8 11/16 in, Security Tint, Gummed Seal, for QuickBooks Checks, Business Mailings : Office Products

Review: Great for use with Intuit QuickBooks Checks! - Blue Summit Supplies are Awesome! I really don't have time to write reviews - but I love their products. They cost slightly less than their competitors - but I think their quality is slightly better. These are definitely "privacy" envelopes; and they seal securely. I use them for Intuit QuickBooks accounts payable vendor checks. We use the full sheet laser checks; keep the bottom stub for our records - mail the check and the middle stub (which has transaction detail) to the vendor. The QB check fits perfectly into these envelopes - with our name/address showing in the top window; the vendor name/address showing in the bottom window. Before, we bought from a "deluxe" supplier - and the price was almost 3x's as much (and sometimes their envelope window cut off the bottom line - which is a problem because it has the zip code... and sometimes it seemed their envelopes were getting a little "tight" to put my checks into). No problems with Blue Summit!
Review: Great value, haven't had one failure yet - I've been using these exact brand and type of envelopes for a mid-sized company for several years, having gone through over 2000 individual envelopes. I can't remember a single instance where one failed, or improperly sealed or had some issue. That's in addition to the great value they provide over more expensive alternatives—which is why they're on my automatic delivery subscription.

## Features

- Precision Fit #8 Envelopes For Checks – Businesses and accounting teams mailing vendor payments use these #8 double window envelopes for QuickBooks checks measuring 3 5/8 x 8 11/16 inches, designed to align with voucher-style check layouts for consistent insertion during accounts payable workflows.
- QuickBooks Check Envelopes with Address Alignment – Offices and payroll teams using QuickBooks checks use these number 10 double window QuickBooks envelopes for checks designed to display the return address in the top window and the payee address below, eliminating the need for labels during weekly check runs.
- Safe Mailing with Inner Security Tint for Privacy – Businesses mailing payroll, paychecks, and financial documents use these #8 security envelopes with a printed security tint that helps reduce read-through and conceal memo lines during transit.
- Reliable Gummed Seal – Accounting teams and mailrooms handling high-volume check runs use these envelopes with a traditional moisture-activated gummed flap that creates a secure closure for consistent sealing across payroll and accounts payable batches.
- Bulk 500 Pack For Office Workflows – Small businesses, accounting teams, and home offices use this 500-count pack of #8 double window check envelopes made from 24lb white paper to maintain a dependable supply for recurring payment and mailing workflows.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01NAQROBP |
| Additional Features | Double Window, Security Tint, Self-Adhesive Closure |
| Best Sellers Rank | #30,315 in Office Products ( See Top 100 in Office Products ) #92 in Business Mailing Envelopes |
| Brand | Blue Summit Supplies |
| Brand Name | Blue Summit Supplies |
| Closure Type | Gummed |
| Color | White |
| Customer Reviews | 4.5 out of 5 stars 737 Reviews |
| Item Dimensions L x W | 8.6"L x 3.6"W |
| Item Shape | Rectangular |
| Item Weight | 5.1 pounds |
| Manufacturer | Blue Summit Supplies |
| Material | Paper |
| Material Type | Paper |
| Model Name | No. 8 Double Window Security Check Envelopes For QuickBooks |
| Number of Items | 1 |
| Occasion | Business Mail |
| Occasion Type | Business Mail, Checks |
| Recommended Uses For Product | Checks |
| Size | Number 8 |
| Style | Security |
| UPC | 865181000337 |
| Unit Count | 500 Count |

## Product Details

- **Brand:** Blue Summit Supplies
- **Closure Type:** Gummed
- **Color:** White
- **Material:** Paper
- **Occasion:** Business Mail

## Images

![500#8 Double Window Security Envelopes, Gummed | 3 5/8 x 8 11/16 in, Security Tint, Gummed Seal, for QuickBooks Checks, Business Mailings - Image 1](https://m.media-amazon.com/images/I/71UimhX0xoL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for use with Intuit QuickBooks Checks!
*by A***R on March 6, 2018*

Blue Summit Supplies are Awesome! I really don't have time to write reviews - but I love their products. They cost slightly less than their competitors - but I think their quality is slightly better. These are definitely "privacy" envelopes; and they seal securely. I use them for Intuit QuickBooks accounts payable vendor checks. We use the full sheet laser checks; keep the bottom stub for our records - mail the check and the middle stub (which has transaction detail) to the vendor. The QB check fits perfectly into these envelopes - with our name/address showing in the top window; the vendor name/address showing in the bottom window. Before, we bought from a "deluxe" supplier - and the price was almost 3x's as much (and sometimes their envelope window cut off the bottom line - which is a problem because it has the zip code... and sometimes it seemed their envelopes were getting a little "tight" to put my checks into). No problems with Blue Summit!

### ⭐⭐⭐⭐⭐ Great value, haven't had one failure yet
*by A***B on February 1, 2026*

I've been using these exact brand and type of envelopes for a mid-sized company for several years, having gone through over 2000 individual envelopes. I can't remember a single instance where one failed, or improperly sealed or had some issue. That's in addition to the great value they provide over more expensive alternatives—which is why they're on my automatic delivery subscription.

### ⭐⭐⭐⭐⭐ Great Envelopes for Sage Checks
*by H***Z on August 10, 2020*

I had a hard time finding a double window security envelope that was reviewed as working well with checks printed in Sage Accounting. I use Sage 50 Accounting and I can say that these fit my checks perfectly! They are good quality - seal well with our Pitney Bowes mail machine and aren't too thin where you can see thru them. Plus, if you can find them thru Amazon Warehouse, are a bargain. Highly recommend!

## Frequently Bought Together

- 500#8 Gummed Double Window Security Check Envelopes - Designed for QuickBooks Checks, Business Mailing, and Security - Computer Printed Checks - Gummed Flap - 3 5/8 X 8 11/16
- Amazon Basics Multipurpose Copy Printer Paper, 8.5 x 11 in, 20 lb, 10 Reams, 5000 Sheets, 92 Bright, White
- Amazon Basics 1/3-Cut Tab, Assorted Positions File Folders, Letter Size, Manila - Pack of 100

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**Shop now:** [https://www.desertcart.com.cy/products/38559678-500-8-double-window-security-envelopes-gummed-3-5-8](https://www.desertcart.com.cy/products/38559678-500-8-double-window-security-envelopes-gummed-3-5-8)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-08-24*