---
product_id: 224900274
title: "Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8” X 9 1/2”, 500 Pack"
brand: "blue summit supplies"
price: "264 zł"
currency: PLN
in_stock: true
reviews_count: 8
url: https://www.desertcart.pl/products/224900274-blue-summit-supplies-500-10-single-window-security-envelopes-flip
store_origin: PL
region: Poland
---

# 500 Pack Security Tint Self-Sealing Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8” X 9 1/2”, 500 Pack

**Brand:** blue summit supplies
**Price:** 264 zł
**Availability:** ✅ In Stock

## Summary

> 📈 Elevate Your Mailing Game with Style!

## Quick Answers

- **What is this?** Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8” X 9 1/2”, 500 Pack by blue summit supplies
- **How much does it cost?** 264 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/224900274-blue-summit-supplies-500-10-single-window-security-envelopes-flip)

## 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

- • **Bulk Convenience:** Easily stuff multiple documents in one envelope for faster processing.
- • **Ultimate Security:** Dark security tint ensures your sensitive information stays private.
- • **Effortless Efficiency:** Streamline your mailing process with our flip and seal design.
- • **QuickBooks Compatible:** Designed specifically for QuickBooks invoices and business statements.
- • **Professional Presentation:** Create a polished look for your invoices and statements.

## Overview

The Blue Summit Supplies 500#10 Single Window Security Envelopes are designed for professionals who value efficiency and security. With a self-sealing feature and a dark security tint, these envelopes ensure that your business communications remain confidential while presenting a professional appearance. Perfect for QuickBooks invoices and billing statements, this 500-pack offers convenience and peace of mind for all your mailing needs.

## Description

Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8” X 9 1/2”, 500 Pack

## Features

- Perfect for mailing Invoices, QuickBooks invoices, billing statements, checks, and other business mail.
- Create professional looking mail with the added security of a single window envelope. Your business mail recipient address will show through the single window and you can quickly print your return address or add return address labels
- Save time with our easy to use flip and seal design; with no need for licking or moistening, our self sealing design allows for sending hundreds of invoices quickly and easily and is guaranteed to stay sealed with no need for tape or glue sticks.
- Save time by quickly stuffing multiple pieces of business mail in our wide and large #10 security envelope design. Smaller #9 or #8 return envelopes will fit inside to get your invoices paid quicker.
- Our dark security tint design provides complete business mail security so your professional business mail will be completely hidden from view during transit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material Type | Paper, Plastic |
| Style Name | Self Sealing |
| Shape | Rectangular |
| Color | White |
| Size Name | large |
| Item Dimensions L x W | 9.5"L x 4.13"W |
| Additional Features | Security Tint |
| Recommended Uses For Product | Security |
| Number of Items | 500 |
| Apparel Closure Type | Self-Seal |

## Images

![Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8” X 9 1/2”, 500 Pack - Image 1](https://m.media-amazon.com/images/I/61zLUAgR+6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Best Yet
  

*by S***Y on Reviewed in the United States on December 30, 2022*

These envelopes are packed so well that my machines have no trouble running them. Great Company

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good envelopes for the price
  

*by T***A on Reviewed in the United States on June 24, 2022*

Good price and good envelopes

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Use quickly
  

*by G***A on Reviewed in the United States on November 11, 2023*

Looses stickiness too fast

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**Shop now:** [https://www.desertcart.pl/products/224900274-blue-summit-supplies-500-10-single-window-security-envelopes-flip](https://www.desertcart.pl/products/224900274-blue-summit-supplies-500-10-single-window-security-envelopes-flip)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-07*