---
product_id: 624050519
title: "Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use"
brand: "triplast"
price: "$75.20"
currency: USD
in_stock: true
reviews_count: 5
url: https://www.desertcart.ec/products/624050519-triplast20-x-c4-white-self-seal-security-envelopes-size-324x229mm
store_origin: EC
region: Ecuador
---

# Size: 324x229mm Pack of 20 Enhanced Security Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use

**Brand:** triplast
**Price:** $75.20
**Availability:** ✅ In Stock

## Summary

> 📬 Elevate Your Mailing Game with Confidence!

## Quick Answers

- **What is this?** Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use by triplast
- **How much does it cost?** $75.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/624050519-triplast20-x-c4-white-self-seal-security-envelopes-size-324x229mm)

## Best For

- triplast enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Use:** Perfect for invoices, letters, and more!
- • **Printer Friendly:** Compatible with most inkjet and laser printers.
- • **Seamless Sealing:** Self-seal adhesive for effortless closure.
- • **Eco-Conscious Choice:** Recyclable and PEFC certified for sustainability.
- • **Confidentiality Guaranteed:** High-security pattern keeps contents hidden.

## Overview

This pack of 20 C4 white self-seal security envelopes (324x229mm) combines practicality with enhanced security features, making them ideal for everyday home, office, and commercial use. With a self-sealing design, high-security pattern, and eco-friendly materials, these envelopes are perfect for sending confidential documents while being kind to the planet.

## Description

Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use

## Features

- CONTENTS: Pack of 20 White Plain Mailing Envelopes | SIZE: C4 | LENGTH: 324 mm / 12.76 in | WIDTH: 229mm / 9.02 in | THICKNESS: 90 gsm | MADE in the UK
- ENHANCED SECURITY: These envelopes feature a blue high security pattern on the inside that scrambles text to ensure contents remain concealed when in-transit or storage. Send confidential documents with total confidence & peace of mind!
- HASSLE-FREE & PRACTICAL: The self-seal adhesive eliminates the need for any tape, glue or licking to seal these envelopes - just fold & press the top flap to secure shut! These envelopes are also compatible with most inkjet and laser printers.
- MULTIPURPOSE: These envelopes are ideal for mailing & organising invoices, letters, statements, catalogues, periodicals, brochures, etc. They are a cost-effective option for everyday home, office & commercial use!
- RECYCLABLE & PEFC CERTIFIED: Apart from being fully recyclable, these envelopes are made from paper sourced in a natural & controlled manner from SUSTAINABLY MANAGED FORESTS that also PROTECT THE RIGHTS OF WORKERS along the production process.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Triplast |
| Brand | Triplast |
| Item Weight | 10.2 ounces |
| Product Dimensions | 12.76 x 9.02 x 0.04 inches |
| Item model number | ENPC420 |
| Color | White |
| Closure | Self-Seal |
| Shape | Rectangular |
| Material Type | Paper |
| Number of Items | 20 |
| Size | C4 (324x229mm) |
| Manufacturer Part Number | ENPC420 |

## Images

![Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use - Image 1](https://m.media-amazon.com/images/I/61U4hv9xewL.jpg)
![Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use - Image 2](https://m.media-amazon.com/images/I/61gGvTJ9J+L.jpg)
![Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use - Image 3](https://m.media-amazon.com/images/I/712tUosUW4L.jpg)
![Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use - Image 4](https://m.media-amazon.com/images/I/81mHec2wyZL.jpg)
![Triplast20 x C4 White Self Seal Security Envelopes (Size: 324x229mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use - Image 5](https://m.media-amazon.com/images/I/71SGZS-4-VL.jpg)

## Available Options

This product comes in different **Number of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Perfectly adequate
  

*by J***R on Reviewed in the United Kingdom on August 14, 2023*

Good enough envelopes, though could do with having a stronger adhesive, but still did the job.

### ⭐⭐⭐⭐ 







  
  
    what can you say?
  

*by I***S on Reviewed in the United Kingdom on November 20, 2022*

Envelope is an envelope

### ⭐⭐⭐⭐⭐ 







  
  
    Envelopes
  

*by M***N on Reviewed in the United Kingdom on August 8, 2023*

Yes good

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**Shop now:** [https://www.desertcart.ec/products/624050519-triplast20-x-c4-white-self-seal-security-envelopes-size-324x229mm](https://www.desertcart.ec/products/624050519-triplast20-x-c4-white-self-seal-security-envelopes-size-324x229mm)

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-23*