--- product_id: 145252249 title: "MT Products White Flat Shipping Envelopes 11\" x 13.5\" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA" brand: "mt products" price: "€ 77.21" currency: EUR in_stock: true reviews_count: 8 category: "Mt Products" url: https://www.desertcart.sk/products/145252249-mt-products-white-flat-shipping-envelopes-11-x-13-5 store_origin: SK region: Slovakia --- # 11" x 13.5" perfect flat size Self-seal peel & tear closure Rigid, heavy-duty protection MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA **Brand:** mt products **Price:** € 77.21 **Availability:** ✅ In Stock ## Summary > 📦 Seal it. Ship it. Impress them. ## Quick Answers - **What is this?** MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA by mt products - **How much does it cost?** € 77.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/145252249-mt-products-white-flat-shipping-envelopes-11-x-13-5) ## Best For - mt products enthusiasts ## Why This Product - Trusted mt products brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Flat & Spacious Design:** Generous 11" x 13.5" size keeps documents and artwork perfectly flat—no more creases or folds. - • **Durable Rigid Construction:** Heavy-duty paperboard mailers that resist bending and crinkling, ensuring your items arrive pristine. - • **Versatile Professional Use:** Ideal for certificates, photos, prints, and important documents—trusted by pros who demand quality. - • **Effortless Self-Seal Closure:** Peel-and-seal strip with tear tab for quick, secure mailing—save time without sacrificing professionalism. - • **Made in the USA with Quality:** Crafted domestically for reliability and a sleek, clean white finish that elevates your brand’s image. ## Overview MT Products White Flat Shipping Envelopes (11" x 13.5") offer a premium, rigid paperboard design with a self-seal closure, perfect for safely mailing photos, artwork, and documents. Made in the USA, these 15-pack envelopes combine durability and professional style to keep your shipments flat, secure, and effortlessly sealed. ## Description desertcart.com : MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA : Office Products Review: Very sturdy - These work wonderful for sending items you don’t want to get damaged in the mail. It even works if slightly stuffed too. Review: Very Sturdy - I usually don't mail print, so this was the first time for me to use these. I'm very pleased. They were very sturdy & I have no doubt that my prints were very protected. They were exactly as described and I would buy them again. ## Features - Keep it safe: This rigid mailer flat white envelope is perfect for keeping all types of items safe like photos, artwork, and documents while in transit. Mail your certificates or prints in the most efficient way using these photo mailers or photo envelopes cardboard sheets. - Quality material stay flat mailers: These cardboard mailers are made of quality construction with a heavy-duty rigid seal, These cardboard envelopes promise amazing quality and do not bend envelopes or crinkle while in use. Perfect for mailing anything that needs to stay flat. - Open/close feature mailer envelopes: These shipping envelopes rigid mailer have a self-seal style with a peel and seal strip for closing envelope mailers and a pull tab tear strip for opening them for an easy open/close feature that saves you time and effort. - All-size document mailer: These photo mailer envelopes came in a variety of sizes to suit your needs. From sending large pictures to family to a small professional letter to a company, with these self seal mailers you can choose the size that fits the bill. No need to squish large papers into small, hard envelopes - we have you completely covered for that. - Professionals use rigid envelopes. Sleek design and clear white color all lend a professional look to this cardboard mailer envelope. Send these letter mailers out when you need to ship something out with a unique and professional touch. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07KNZ6GD6 | | Additional Features | Self-Adhesive Closure | | Best Sellers Rank | #647,246 in Office Products ( See Top 100 in Office Products ) #3,504 in Envelope Mailers | | Brand Name | MT Products | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.6 4.6 out of 5 stars (194) | | Item Dimensions L x W | 13.5"L x 11"W | | Item Shape | Rectangular | | Manufacturer | MT Products | | Material Type | Paperboard | | Number of Items | 15 | | Occasion | Professional Use | | Recommended Uses For Product | Invitation Card, Letter | | Size | 11 X 13.5 | | Style | 11 X 13.5 | | UPC | 735424500842 | | Unit Count | 15 Count | ## Product Details - **Brand:** MT Products - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paperboard - **Occasion:** Professional Use ## Images ![MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA - Image 1](https://m.media-amazon.com/images/I/61rX0NIiB9L.jpg) ![MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA - Image 2](https://m.media-amazon.com/images/I/71L33-73P8L.jpg) ![MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA - Image 3](https://m.media-amazon.com/images/I/610Q+VKAixL.jpg) ![MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA - Image 4](https://m.media-amazon.com/images/I/71E8FaJfV5L.jpg) ![MT Products White Flat Shipping Envelopes 11" x 13.5" - Self-Seal Mailing Envelopes (Pack of 15) - Made in the USA - Image 5](https://m.media-amazon.com/images/I/71FUV90farL.jpg) ## Available Options This product comes in different **Number Of Items, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very sturdy *by T***Y on December 18, 2022* These work wonderful for sending items you don’t want to get damaged in the mail. It even works if slightly stuffed too. ### ⭐⭐⭐⭐⭐ Very Sturdy *by M***S on October 4, 2020* I usually don't mail print, so this was the first time for me to use these. I'm very pleased. They were very sturdy & I have no doubt that my prints were very protected. They were exactly as described and I would buy them again. ### ⭐⭐⭐⭐⭐ Great product *by D***E on April 25, 2021* Loved these! I got them to ship out my vinyl decals and stickers so that they wouldn’t bend in the mail, and everyone got theirs perfectly in tact! They’re really sturdy and can hold a lot --- ## 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.sk/products/145252249-mt-products-white-flat-shipping-envelopes-11-x-13-5](https://www.desertcart.sk/products/145252249-mt-products-white-flat-shipping-envelopes-11-x-13-5) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-07-26*