---
product_id: 154341920
title: "500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500"
brand: "blue summit supplies"
price: "2840214₫"
currency: VND
in_stock: true
reviews_count: 8
url: https://www.desertcart.vn/products/154341920-500-no-9-self-seal-security-envelopes-peel-and-seal
store_origin: VN
region: Vietnam
---

# Fits standard 8.5” x 11” documents 100% opaque security tint Printer-friendly, jam-resistant design 500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500

**Brand:** blue summit supplies
**Price:** 2840214₫
**Availability:** ✅ In Stock

## Summary

> 📬 Seal your success with every send—secure, sleek, and stress-free!

## Quick Answers

- **What is this?** 500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500 by blue summit supplies
- **How much does it cost?** 2840214₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/154341920-500-no-9-self-seal-security-envelopes-peel-and-seal)

## 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

- • **Durable & Professional:** Crafted from sturdy 24 lb white wove paper to maintain a crisp, clean look throughout transit.
- • **Effortless Seal & Send:** Peel-and-seal closure guarantees a strong, moisture-free seal—no licking, no tape, no hassle.
- • **Seamless Bulk Printing:** Optimized for laser and inkjet printers with smooth, thick paper to prevent jams and save time.
- • **Ultimate Privacy Shield:** Dark black security tint ensures zero visibility of contents, protecting sensitive info from prying eyes.
- • **Perfect Fit for Professionals:** Sized to snugly hold standard letter-sized documents, invoices, and checks for polished, organized mailing.

## Overview

Blue Summit Supplies’ 500 No. 9 Self Seal Security Envelopes combine robust privacy with professional convenience. Featuring a dark security tint to fully obscure contents, peel-and-seal closures for quick, reliable sealing, and a printer-friendly design that fits standard 8.5” x 11” documents, these envelopes are engineered for efficient, secure mailing in high-volume office environments.

## Description

Full description not available

## Features

- Perfect for secure everyday home and business mailing. Our security #9 windowless envelopes perfectly fit standard 8.5’’ x 11’’ paper sizes and other large documents. Easily fits invoices, letters, checks, and more.
- Provides complete mail security. No need to worry about others seeing your documents, our dark black security tint completely hides your mail.
- Just peel and seal to create a strong lasting seal without licking or moistening. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.
- Easily print hundreds of envelopes with our low profile envelope design. Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. These envelopes are designed for both laser and inkjet printers.
- Maintains professional look and feel throughout transit with our durable 24 lb white wove envelope paper

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Blue Summit Supplies |
| Brand | Blue Summit Supplies |
| Item Weight | 5.66 pounds |
| Product Dimensions | 8.88 x 3.88 x 0.04 inches |
| Color | White |
| Closure | Self-Seal |
| Shape | Rectangular |
| Material Type | Paper |
| Number of Items | 500 |
| Size | One Size |
| Manufacturer Part Number | BSS-92588-034 |

## Product Details

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

## Images

![500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500 - Image 1](https://m.media-amazon.com/images/I/61YanJuJrFL.jpg)
![500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500 - Image 2](https://m.media-amazon.com/images/I/51GRF-72VAL.jpg)
![500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500 - Image 3](https://m.media-amazon.com/images/I/81N+c2ekRPL.jpg)
![500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500 - Image 4](https://m.media-amazon.com/images/I/8176CE6SKBL.jpg)
![500 No. 9 Self Seal Security Envelopes – Peel and Seal Designed for Secure Mailing - Security Tinted with Printer Friendly Design - Number 9 Size 3 7/8 Inch X 8 7/8 - Pack of 500 - Image 5](https://m.media-amazon.com/images/I/61psO9UG5ZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works great for return mailings.  Fits well inside #10 envelopes.
  

*by T***E on Reviewed in the United States on February 15, 2023*

Needed for use as a return envelope.  Worked well in my printer.  No jams.  Worked as intended with very good sealing.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Just what I needed
  

*by R***K on Reviewed in the United States on February 27, 2023*

I include #9 envelopes as a return envelope so I don't have to fold them like a #10.  This size is not as easy to find, and the price of these was great!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good quality
  

*by O***A on Reviewed in the United States on January 5, 2023*

I like the self seal aspect. Use them for letter writing

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**Shop now:** [https://www.desertcart.vn/products/154341920-500-no-9-self-seal-security-envelopes-peel-and-seal](https://www.desertcart.vn/products/154341920-500-no-9-self-seal-security-envelopes-peel-and-seal)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-13*