---
product_id: 55366045
title: "Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents"
brand: "triplast"
price: "¥11351"
currency: JPY
in_stock: true
reviews_count: 11
url: https://www.desertcart.jp/products/55366045-triplast-100-x-a6-c6-manilla-hard-board-back-envelopes
store_origin: JP
region: Japan
---

# 162x114mm perfect A6 fit 1000 micron rigid board backing Peel & seal secure closure Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents

**Brand:** triplast
**Price:** ¥11351
**Availability:** ✅ In Stock

## Summary

> 📬 Mail with confidence — protect, seal, and impress every time!

## Quick Answers

- **What is this?** Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents by triplast
- **How much does it cost?** ¥11351 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/55366045-triplast-100-x-a6-c6-manilla-hard-board-back-envelopes)

## 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

- • **Eco-Friendly Packaging:** Made from 100% recycled, biodegradable materials for guilt-free mailing.
- • **Lightweight Yet Sturdy:** Robust design reduces postage costs without compromising protection.
- • **Speedy & Secure Sealing:** Built-in peel & seal strip slashes packing time with a strong, hassle-free seal.
- • **Ultimate Document Protection:** 120gsm kraft front + 1000 micron board back keeps contents crease-free and safe.
- • **Direct Addressing Convenience:** Smooth kraft finish allows handwriting or label application for a professional touch.

## Overview

Triplast’s 100-pack of A6 C6 manilla hard board envelopes combines a rigid 1000 micron cardboard backing with a 120gsm kraft paper front to ensure your documents stay flat and crease-free. Featuring a peel & seal strip for quick, secure closure, these lightweight yet durable envelopes reduce postage costs and eliminate the need for extra tape. Made from 100% recycled, biodegradable materials, they offer an eco-conscious solution for mailing gift cards, photos, passports, and more.

## Description

Product Description Triplast Board Back Envelopes Triplast’s board backed “Please do not bend” envelopes are made from 100% recycled material consisting of a 1000 micron solid cardboard backing paired with 120gsm kraft paper front . These heavy duty manilla hard backed envelopes are designed to offer protection against bumps and scrapes in the post ensuring your important documents remain flat, crease-free & safe . They are the ideal choice for mailing legal documents, certificates, contracts, photos, artwork, catalogues, blueprints & more. These do not bend envelopes come with a peel and seal strip offering a quick & secure seal resulting in increased packing speed as you won't need any additional tape or glue to seal. Their light yet robust structure helps you keep your shipping weight in check without compromising on protection. The smooth kraft finish on the front will allow you to either handwrite addresses directly or attach sticky address labels for a more professional look. At Triplast, we stock a complete range of sizes - C3 (for A3 paper), C4 (for A4 paper), C5 (for A5 paper) and C6 (for A6 paper).

Review: Highly recommend - Value for money, size is very good, quality good
Review: Good quality - Good quality product the came as described. Efficient delivery. Overall very good

## Features

- A MAILING ESSENTIAL: Pack of 100 x C6 rigid mailers designed to contain unfolded A6 paper (or A5 paper folded in half) - perfectly sized for posting & storing gift cards, currency, stamps, receipts, photographs, postcards, passports & ID cards
- WILL NOT BEND: 120gsm kraft paper front & 1000 micron board back construction offers all-round protection & rigidity to keep contents flat, crease-free & safe. "Please do not bend" is printed in large red font on the front to caution all handlers.
- QUICK, EASY & SECURE: Built-in peel & seal strip reduces packing time & cost by providing a strong & hassle-free seal while also offering extended shelf-life over self seal envelopes - just remove the strip & press the flap down to seal!
- SAVE ON PACKAGING & POSTAGE: A more cost-effective & waste-free alternative to all board envelopes, these light yet sturdy card backed envelopes are also cheaper to post. You may write on them directly to eliminate the need for extra address labels.
- AN ECO-CONSCIOUS CHOICE: Made from 100% recycled material, fully kerbside recyclable & biodegradable - these hard back envelopes are a plastic-free, sustainable & environmentally conscious packaging choice for office, school & home use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01H01U34E |
| Best Sellers Rank | 3,110 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 16 in Packing List Envelopes |
| Brand | Triplast |
| Brand Name | Triplast |
| Closure Type | Self-Seal |
| Closure type | Self-Seal |
| Colour | Brown |
| Customer Reviews | 4.8 out of 5 stars 678 Reviews |
| Global Trade Identification Number | 05056025162952 |
| Item Dimensions L x W | 16.2L x 11.4W centimetres |
| Item Shape | Rectangular |
| Item Type Name | Board Backed Envelopes |
| Item Weight | 0.03 Pounds |
| Manufacturer | Triplast |
| Material | Cardboard |
| Material Type | Cardboard |
| Model Name | C6 |
| Number of Items | 100 |
| Number of items | 100 |
| Occasion | ['Christmas', 'Graduation'] |
| Occasion Type | Anytime |
| Recommended Uses For Product | Cash, Disc, Invitation Card, Letter |
| Size | A6 C6 (162 x 114mm) |
| Special Features | Lightweight, Self-Adhesive Closure |
| Style | Flat |
| Unit Count | 100.0 count |

## Product Details

- **Brand:** Triplast
- **Closure type:** Self-Seal
- **Colour:** Brown
- **Material:** Cardboard
- **Occasion:** ['Christmas', 'Graduation']

## Images

![Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents - Image 1](https://m.media-amazon.com/images/I/61RvVIHaWfL.jpg)
![Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents - Image 2](https://m.media-amazon.com/images/I/719rUhvp9cL.jpg)
![Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents - Image 3](https://m.media-amazon.com/images/I/71XQNFaZ38L.jpg)
![Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents - Image 4](https://m.media-amazon.com/images/I/81dlZ5mE+tL.jpg)
![Triplast 100 x A6 C6 Manilla Hard Board Back Envelopes (162x114mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents - Image 5](https://m.media-amazon.com/images/I/61KEjAvFn0L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly recommend
*by V***A on 21 December 2025*

Value for money, size is very good, quality good

### ⭐⭐⭐⭐⭐ Good quality
*by D***H on 18 April 2026*

Good quality product the came as described. Efficient delivery. Overall very good

### ⭐⭐⭐⭐⭐ Great for sending discs through the mail
*by C***A on 22 November 2025*

Nice quality card back envelopes. I use them for sending discs through the post and I’ve never had an issue with them. They’re nice and thick and keep everything secure with Royal Mail. They’re cheaper to buy through Amazon than through standard packaging suppliers, so you’re getting a great deal.

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**Shop now:** [https://www.desertcart.jp/products/55366045-triplast-100-x-a6-c6-manilla-hard-board-back-envelopes](https://www.desertcart.jp/products/55366045-triplast-100-x-a6-c6-manilla-hard-board-back-envelopes)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-21*