--- product_id: 207379963 title: "Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents" brand: "triplast" price: "£40.44" currency: GBP in_stock: true reviews_count: 2 url: https://www.desertcart.co.uk/products/207379963-triplast-125-x-a4-c4-manilla-hard-board-back-envelopes store_origin: GB region: United Kingdom --- # Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents **Brand:** triplast **Price:** £40.44 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - 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?** £40.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/207379963-triplast-125-x-a4-c4-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 ## Description Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - Cardboard Backed Mailers with Peel & Seal Strip - Rigid Do Not Bend Envelopes for Mailing Posting Shipping & Storing Documents ## Features - A MAILING ESSENTIAL: These C4 rigid mailers are designed to contain unfolded A4 paper (or A3 paper folded in half) - they're perfect for posting & storing certificates, legal documents, passports, ID cards, photos, artwork, gift cards, currency, etc. - DO 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 PACKING & 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. - ECO-FRIENDLY: 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 | |---------------|-------| | Manufacturer | Triplast | | Brand | Triplast | | Model Number | A4 C4 | | Product Dimensions | 22.9 x 32.4 x 0.2 cm; 55.79 g | | Colour | Brown | | Closure | Self-Seal | | Shape | Rectangular | | Material Type | Paper | | Number of Items | 125 | | Size | A4 C4 (324 x 229mm) | | Manufacturer Part Number | A4 C4 | | Item Weight | 55.8 g | ## Product Details - **Brand:** Triplast - **Closure Type:** Self-Seal - **Color:** Brown - **Material:** Paper - **Occasion:** Graduation ## Images ![Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - 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/71pjehKgJ1L.jpg) ![Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - 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/71mr9pbbm9L.jpg) ![Triplast 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - 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 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - 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 125 x A4 C4 Manilla Hard Board Back Envelopes (324x229mm) - 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) ## Customer Reviews ### ⭐ 1.0 out of 5 stars Good Quality - ONLY ON YOUR FIRST ORDER!! *by L***A on Reviewed in the United Kingdom on 29 December 2020* I have purchased C4 envelopes from several sellers and they were awful. I'm happy with my purchase, good quality, and sturdy envelopes. Thank you!____________________________EDITED AFTER SECOND ORDER:On my second order envelopes are not the same quality but AWFUL quality. Had to return them, as cannot be used if you are sending fragile items such as artworks/prints. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Excellent quality *by J***E on Reviewed in the United Kingdom on 12 February 2020* Excellent quality to send my hand painted cards which I sell --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/207379963-triplast-125-x-a4-c4-manilla-hard-board-back-envelopes](https://www.desertcart.co.uk/products/207379963-triplast-125-x-a4-c4-manilla-hard-board-back-envelopes) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-05*