--- product_id: 556854878 title: "Postmaster A5 C5 Do Not Bend Board Back Envelopes 229 x 162 mm Peel Seal 50 Pack, Brown" brand: "postmaster" price: "450 zł" currency: PLN in_stock: true url: https://www.desertcart.pl/products/556854878-postmaster-a5-c5-do-not-bend-board-back-envelopes-229 store_origin: PL region: Poland --- # 229 x 162 mm perfect A5 C5 size PEFC-certified sustainable materials Rigid hard board backing for ultimate protection Postmaster A5 C5 Do Not Bend Board Back Envelopes 229 x 162 mm Peel Seal 50 Pack, Brown **Brand:** postmaster **Price:** 450 zł **Availability:** ✅ In Stock ## Summary > 📬 Send with Confidence, Arrive with Impact! ## Quick Answers - **What is this?** Postmaster A5 C5 Do Not Bend Board Back Envelopes 229 x 162 mm Peel Seal 50 Pack, Brown by postmaster - **How much does it cost?** 450 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/556854878-postmaster-a5-c5-do-not-bend-board-back-envelopes-229) ## Best For - postmaster enthusiasts ## Why This Product - Trusted postmaster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Conscious Choice:** PEFC-certified, supporting sustainable forestry and responsible sourcing—mail with a conscience. - • **Clear 'Do Not Bend' Warning:** Boldly printed to ensure your important mail arrives pristine and crease-free every time. - • **Rock-Solid Document Defense:** Hard board backing shields your legal papers, photos, and certificates from any bend or crease. - • **Trusted by Britain’s Best:** Manufactured by Postmaster, the go-to envelope supplier for top UK organizations and savvy home businesses alike. - • **Perfect Fit for Professional Mail:** Sized precisely for A5 and folded A4 sheets, optimized for single 1st or 2nd class postage under 100g. ## Overview Postmaster A5 C5 Do Not Bend Board Back Envelopes offer premium hard board-backed protection for important documents, perfectly sized for A5 or folded A4 sheets. Featuring a peel-seal closure and a clear 'Do Not Bend' warning, these 50-pack brown envelopes are PEFC-certified for sustainability and trusted by leading UK organizations to ensure your mail arrives flawless and professional. ## Description Pack of 50 A5 C5 Board Backed Envelopes HARD BOARD-BACKED PROTECTION - Essential for Important Documents such as legal papers, photographs, certificates, passports C5 ENVELOPE - Designed to take sheets of A4 Paper folded in half, or sheets of A5 paper unfolded. Designed to be sent using a single 1st Class or 2nd Class Stamp (max 100g) DO NOT BEND - written clearly on the Envelope to help ensure your mail gets couriered through the postal system without being folded or damaged PEFC-CERTIFIED FOR SUSTAINABILITY - PEFC is a European based Forest certification system, that allows small- and family forest owners to demonstrate their excellence in sustainable forest management POSTMASTER - we manufacturer millions of Envelopes for some of Britain's biggest Organisations as well as for thousands of small, home based businesses ## Features - HARD BOARD-BACKED PROTECTION - Essential for Important Documents such as legal papers, photographs, certificates, passports - C5 ENVELOPE - Designed to take sheets of A4 Paper folded in half, or sheets of A5 paper unfolded. Designed to be sent using a single 1st Class or 2nd Class Stamp (max 100g) - DO NOT BEND - written clearly on the Envelope to help ensure your mail gets couriered through the postal system without being folded or damaged - PEFC-CERTIFIED FOR SUSTAINABILITY - PEFC is a European based Forest certification system, that allows small- and family forest owners to demonstrate their excellence in sustainable forest management - POSTMASTER - we manufacture millions of Envelopes for some of Britain's biggest Organisations as well as for thousands of small, home based businesses ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Bong | | Brand | Postmaster | | Item Weight | 3.21 pounds | | Product Dimensions | 6.38 x 9.02 x 0.02 inches | | Item model number | RBL10613 | | Color | Brown | | Closure | Self-Seal | | Shape | Rectangular | | Material Type | Cardstock | | Number of Items | 50 | | Size | A5 | | Paper Weight | 120 | | Paper Finish | Matte | | Manufacturer Part Number | RBL10613 | ## Product Details - **Brand:** Postmaster - **Color:** Brown - **Closure Type:** Self-Seal - **Occasion:** Formal - **Material:** Cardstock ## Images ![Postmaster A5 C5 Do Not Bend Board Back Envelopes 229 x 162 mm Peel Seal 50 Pack, Brown - Image 1](https://m.media-amazon.com/images/I/61M6Cv2Ts3L.jpg) ## Available Options This product comes in different **Size, Style** options. --- ## 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.pl/products/556854878-postmaster-a5-c5-do-not-bend-board-back-envelopes-229](https://www.desertcart.pl/products/556854878-postmaster-a5-c5-do-not-bend-board-back-envelopes-229) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-06-23*