--- product_id: 6179869 title: "#9 Security Tinted Envelopes - 100 Pack - Letter Size 3 7/8\" x 8 7/8\" - Gummed Seal for Business, Return Mailing, Legal, Checks, Invoices, Statements - 24lb Plain" brand: "endoc" price: "€ 29.32" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.be/products/6179869-9-security-tinted-envelopes-100-pack-letter-size-3-7 store_origin: BE region: Belgium --- # #9 Security Tinted Envelopes - 100 Pack - Letter Size 3 7/8" x 8 7/8" - Gummed Seal for Business, Return Mailing, Legal, Checks, Invoices, Statements - 24lb Plain **Brand:** endoc **Price:** € 29.32 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** #9 Security Tinted Envelopes - 100 Pack - Letter Size 3 7/8" x 8 7/8" - Gummed Seal for Business, Return Mailing, Legal, Checks, Invoices, Statements - 24lb Plain by endoc - **How much does it cost?** € 29.32 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/6179869-9-security-tinted-envelopes-100-pack-letter-size-3-7) ## Best For - endoc enthusiasts ## Why This Product - Trusted endoc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description #9 Security Tinted Envelopes - 100 Pack - Letter Size 3 7/8" x 8 7/8" - Gummed Seal for Business, Return Mailing, Legal, Checks, Invoices, Statements - 24lb Plain ## Images ![#9 Security Tinted Envelopes - 100 Pack - Letter Size 3 7/8" x 8 7/8" - Gummed Seal for Business, Return Mailing, Legal, Checks, Invoices, Statements - 24lb Plain - Image 1](https://m.media-amazon.com/images/I/61jRg7c7VGL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for Businesses and Sending SASEs *by Y***S on Reviewed in the United States 🇺🇸 on March 11, 2016* Do you know how hard it is to find #9 envelopes at a brick-and-mortar store that doesn't come in a box of 500? And, if you do find a box of them, they tend to have the see-through window on them. I went to several different office supply retailers (and similar stores) to purchase #9 envelopes and could not find a box count and price that fit my budget. CheckOMatic came to the rescue by selling a box count that I could work with, and for a price that wouldn't break the bank.The envelopes shipped quickly and are packaged in a sturdy cardboard box with an easy flip lid.I am also pleased with the quality of the envelopes. The #9s are not flimsy and offer sturdy construction. They are made with dark tinted security, which means that your private information is kept safe. I use them when a SASE (self-addressed stamped envelope) is required. You stick a #9 inside of a #10 envelope (the standard business-sized envelope size sold everywhere), and you don't have to worry about awkwardly folding an envelope to make it fit. The envelopes would also definitely make a solid addition to a business office. I'm very pleased to have found something to meet my needs. ### ⭐⭐⭐⭐⭐ Exactly what I expected, flexible use *by M***H on Reviewed in the United States 🇺🇸 on September 20, 2020* I bought these to be printed return envelopes inside number 10 envelopes. They happen to be the same opaque interior as my number 10. The package size is more than I really wanted to buy,, but for ordinary mailing they can be used as a substitute for a number 10s and go through the printer the same way. ### ⭐⭐⭐⭐⭐ Your life with loose-fitting #10 envelopes is OVER. *by S***G on Reviewed in the United States 🇺🇸 on March 4, 2016* Your life with #10 envelopes is OVER. Do you even know why you have been buying #10 envelopes your entire adult life? Neither did I, until I tried #9 envelopes. #9 envelopes actually fit a 3-folded piece of 8 1/2" x 11" piece of paper PERFECTLY. No sliding around inside the envelope, no extra space. Just snug and secure. A bonus feature of a #9 envelope is that it fits inside a #10 envelope, so you can easily send a return envelope without having to fold it. Genius. These envelopes come in a nice thick corrugated cardboard box with attached folding lid. --- ## 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.be/products/6179869-9-security-tinted-envelopes-100-pack-letter-size-3-7](https://www.desertcart.be/products/6179869-9-security-tinted-envelopes-100-pack-letter-size-3-7) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-25*