---
product_id: 39300551
title: "500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2"
brand: "blue summit supplies"
price: "¥18038"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/39300551-500-no-10-self-seal-single-window-security-envelopes-designed
store_origin: JP
region: Japan
---

# 4.125" x 9.5" size Self-seal closure Dark security tint 500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2

**Brand:** blue summit supplies
**Price:** ¥18038
**Availability:** ✅ In Stock

## Summary

> 📬 Seal the Deal with Style!

## Quick Answers

- **What is this?** 500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2 by blue summit supplies
- **How much does it cost?** ¥18038 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/39300551-500-no-10-self-seal-single-window-security-envelopes-designed)

## 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:** Perfect for invoices, checks, and billing statements.
- • **Enhanced Security:** Dark tint ensures your sensitive information stays private.
- • **Time-Saving Design:** Easily stuff multiple documents, including smaller envelopes.
- • **Quick & Easy Mailing:** Peel and seal for a hassle-free, secure closure.
- • **Professional Presentation:** Elevate your business correspondence with sleek, single window design.

## Overview

The 500 No. 10 Self Seal Single Window Security Envelopes by Blue Summit Supplies are designed for efficient and secure mailing of invoices, checks, and business statements. With a convenient self-seal closure and a professional appearance, these envelopes ensure your correspondence is both stylish and secure.

## Description

500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2

## Features

- Perfect for mailing Invoices, QuickBooks Invoices and checks, 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
- Just peel and seal for a strong lasting seal. Our security envelopes will quickly and easily create a strong seal for completely secure 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 professional business mail will be completely hidden with our dark security tint design

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Blue Summit Supplies |
| Brand | Blue Summit Supplies |
| Item Weight | 6.12 pounds |
| Product Dimensions | 9.5 x 4.13 x 0.04 inches |
| Item model number | BSS-92588-004 |
| Is Discontinued By Manufacturer | No |
| Color | white |
| Closure | Self-Seal |
| Shape | Rectangular |
| Material Type | Paper |
| Size | 4 1/8 X 9 1/2 inches |
| Sheet Size | 4.125-x-9.5-inch |
| Manufacturer Part Number | BSS-92588-004 |

## Product Details

- **Brand:** Blue Summit Supplies
- **Color:** white
- **Closure Type:** Self-Seal
- **Material:** Paper
- **Special Feature:** Security Tint, Self Adhesive

## Images

![500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2 - Image 1](https://m.media-amazon.com/images/I/71o7nfrAmKL.jpg)
![500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2 - Image 2](https://m.media-amazon.com/images/I/611FFUussxL.jpg)
![500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2 - Image 3](https://m.media-amazon.com/images/I/81a7gxuxbbL.jpg)
![500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2 - Image 4](https://m.media-amazon.com/images/I/51XHwqv6BvL.jpg)
![500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2 - Image 5](https://m.media-amazon.com/images/I/41P6c+tdQwL.jpg)

## Frequently Bought Together

- 500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements - Computer Printed Checks with Strong Peel and Seal Flap - Number 10 Size 4 1/8 X 9 1/2
- Amazon Basics #10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Closure - 500-Pack, White
- Amazon Basics Multipurpose Copy Printer Paper, 8.5" x 11", 20 lb, 8 Reams, 4000 Sheets, 92 Bright, White

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**Shop now:** [https://www.desertcart.jp/products/39300551-500-no-10-self-seal-single-window-security-envelopes-designed](https://www.desertcart.jp/products/39300551-500-no-10-self-seal-single-window-security-envelopes-designed)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-22*