--- product_id: 557632962 title: "Postmaster C4 Envelopes" brand: "postmaster" price: "฿1041" currency: THB in_stock: true category: "Postmaster" url: https://www.desertcart.co.th/products/557632962-postmaster-c4-envelopes store_origin: TH region: Thailand --- # PEFC-certified sustainable paper Perfect A4 fit Opaque privacy lining Postmaster C4 Envelopes **Brand:** postmaster **Price:** ฿1041 **Availability:** ✅ In Stock ## Summary > 📬 Seal your professionalism with every send! ## Quick Answers - **What is this?** Postmaster C4 Envelopes by postmaster - **How much does it cost?** ฿1041 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/557632962-postmaster-c4-envelopes) ## 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 - • **Trusted UK Quality:** Manufactured in the UK with premium 100GSM bright white paper, compatible with printers and labels. - • **Privacy-First Design:** Opaque blue interior lining keeps your sensitive documents confidential and secure. - • **Designed for A4 Sheets:** Fits unfolded A4 documents perfectly, ideal for professional mailings without extra postage. - • **Eco-Friendly & Certified:** Made from PEFC-certified paper supporting sustainable forest management—mail with a conscience. - • **Effortless Peel & Seal Closure:** No licking, no mess—just peel and press for a secure seal every time. ## Overview Postmaster C4 Envelopes are premium, peel & seal envelopes designed to fit unfolded A4 sheets securely. Featuring an opaque blue privacy lining and made from PEFC-certified sustainable 100GSM paper, these UK-manufactured envelopes combine eco-consciousness with professional-grade quality. Ideal for business or formal use, they ensure hassle-free sealing and compatibility with most printers, making them a must-have for any modern office. ## Description C4 ENVELOPE - Designed to take sheets of A4 Paper unfolded. Designed to be sent using a single Large Letter 1st Class or 2nd Class Stamp (max 100g)KEEPS YOUR DOCUMENTS PRIVATE - our envelopes are printed on the inside with an opaque blue pattern that makes it difficult to see what is inside the envelopePEFC-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 managementHYGIENIC & FAST - this envelope features Peel & Seal closing, which means no licking or peeling. Simply Peel the Tape then press the flap down for a secure, hassle free closeMADE IN THE UK - we manufacture millions of Envelopes for some of Britain's biggest Organisations as well as for thousands of small, home based businesses using quality, bright white 100GSM paper. The Paper can be written on, labelled or can be used with most household & office printers ## Features - C4 ENVELOPE - Designed to take sheets of A4 Paper unfolded. Designed to be sent using a single Large Letter 1st Class or 2nd Class Stamp (max 100g) - KEEPS YOUR DOCUMENTS PRIVATE - our envelopes are printed on the inside with an opaque blue pattern that makes it difficult to see what is inside the envelope - 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 - HYGIENIC & FAST - this envelope features Peel & Seal closing, which means no licking or peeling. Simply Peel the Tape then press the flap down for a secure, hassle free close - MADE IN THE UK - we manufacture millions of Envelopes for some of Britain's biggest Organisations as well as for thousands of small, home based businesses using quality, bright white 100GSM paper. The Paper can be written on, labelled or can be used with most household & office printers ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CGB1PLM2 | | Best Sellers Rank | 284 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 1 in Booklet Mailing Envelopes | | Brand Name | Postmaster | | Closure Type | Self-Seal | | Colour | White Window | | Customer Reviews | 4.6 4.6 out of 5 stars (1,552) | | Item Dimensions L x W | 33.4L x 22.9W centimetres | | Item Shape | Rectangular | | Item Type Name | Envelopes | | Manufacturer | Bong | | Material Type | Paper | | Model Name | Postmaster Business | | Number of Items | 25 | | Occasion | Office | | Occasion Type | Anytime, Business, Formal | | Recommended Uses For Product | Documents, Letter, Seed | | Size | A4 | | Special Features | Peel & Seal, Self-Adhesive Closure | | Style | A4 | | Unit Count | 25.0 count | ## Product Details - **Brand:** Postmaster - **Closure type:** Self-Seal - **Colour:** White Window - **Material:** Paper - **Occasion:** Office ## Images ![Postmaster C4 Envelopes - Image 1](https://m.media-amazon.com/images/I/61gPY6Zv9GL.jpg) ## Frequently Bought Together - Postmaster A4 Envelopes Peel & Seal 100GSM White Paper - 25 Pack - Postmaster A5 Envelopes Peel & Seal 100GSM White Paper - 25 Pack - Postmaster Envelopes DL Peel & Seal 100GSM White Paper - 100 Pack --- ## 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.th/products/557632962-postmaster-c4-envelopes](https://www.desertcart.co.th/products/557632962-postmaster-c4-envelopes) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-11-03*