--- product_id: 454764972 title: "Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use" brand: "triplast" price: "¥11785" currency: JPY in_stock: true category: "Triplast" url: https://www.desertcart.jp/products/454764972-triplast-500-x-dl-white-self-seal-security-envelopes-size store_origin: JP region: Japan --- # Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use **Brand:** triplast **Price:** ¥11785 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | Fully Opaque, Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home, Office & Commercial Use by triplast - **How much does it cost?** ¥11785 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/454764972-triplast-500-x-dl-white-self-seal-security-envelopes-size) ## 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 Great prices on your favourite Office brands plus free delivery and returns on eligible orders. ## Features - CONTENTS: Pack of 500 White Plain Mailing Envelopes | SIZE: DL | LENGTH: 110 mm / 4.33 in | WIDTH: 220mm / 8.66 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 | |---------------|-------| | ASIN | B0B3RW5ZWF | | Best Sellers Rank | 35 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 1 in Catalogue Envelopes | | Brand Name | Triplast | | Closure Type | Self-Seal | | Colour | White | | Country Of Origin | United Kingdom | | Customer Reviews | 4.5 4.5 out of 5 stars (1,767) | | Item Dimensions L x W | 22L x 11W centimetres | | Item Shape | Rectangular | | Item Type Name | Plain Envelope | | Manufacturer | Triplast | | Material Type | Paper | | Number of Items | 500 | | Occasion | Anytime | | Occasion Type | Anytime | | Recommended Uses For Product | Security | | Size | Plain - DL (110x220mm) | | Special Features | Self Seal | | Style | Flat | | Unit Count | 500.0 count | ## Product Details - **Brand:** Triplast - **Closure type:** Self-Seal - **Colour:** White - **Material:** Paper - **Occasion:** Anytime ## Images ![Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | 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/71nVwvvg0yL.jpg) ![Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | 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/61h0So0DzfL.jpg) ![Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | 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/71VWWwZLaRL.jpg) ![Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | 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) ![Triplast 500 x DL White Self Seal Security Envelopes (Size: 110x220mm) | 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) --- ## 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.jp/products/454764972-triplast-500-x-dl-white-self-seal-security-envelopes-size](https://www.desertcart.jp/products/454764972-triplast-500-x-dl-white-self-seal-security-envelopes-size) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-09*