Your cart is empty.
Your cart is empty.Product Description
#10 Business Envelopes with Security Tint and Secure Seal
It’s no secret that #10 security envelopes are the workhorse of business mailing, and we’ve designed our standard #10 envelope to keep your documents safe and secure behind a strong permanent seal throughout transit. Our most popular business envelope is made from a durable 24lb white wove paper and comes equipped with a low profile flap design. Easily fold and stuff up to 10 sheets of standard letter size paper inside with room for a #8 or #9 return envelope – so you can make it simpler than ever for your clients to quickly return payments to you. And with our dark security tint lining the inside, your confidential mail will stay concealed and secure all the way to its destination. It’s an envelope choice that’s simple enough for everyday letters and statements, yet professional and secure enough for high-profile business communications.
Blue Summit Supplies Secure Seal Types
Peel & Seal!
Simply pull the backing off the envelope's flap to reveal an adhesive strip that can be folded over and pressed down to seal contents safely inside.
Gummed!
Moisten the strip of adhesive found on the envelope's flap and fold over to seal contents securely inside.
Flip & Seal!
No moisture is required, just flip up the bottom flap, fold over the top flap and press to secure contents safely inside.
- Secure Closure Types: Gummed, Flip & Seal, Peel & Seal
- Industry Standard Durable 24lb White Wove Paper
- Cross-Hatch Security Tint Keeps Contents Concealed
Compare Blue Summit Supplies #10 Business Envelopes
Cynthia
Reviewed in Canada on March 11, 2025
Sont parfaites ! Merci
SueBD
Reviewed in the United States on June 1, 2023
Delivered in less than 24 hours, but paid for the regular shipping. We were lucky enougn to be close to the distribution center, I guess. Envelopes all came in good shape with none of the seals sticking.
Julie A. Merring
Reviewed in the United States on December 19, 2022
These envelopes work perfectly with my Quickbook checks as well as my after market invoices. They are a little bit lighter weight than previous that I was using (.3 oz vs .2 oz). Glue works well and is pretty much tasteless. I will buy these in the future as they end up being SO much cheaper especially with free shipping.
Kattee
Reviewed in Canada on January 28, 2021
These were great They fit normal size letters and they were hidden inside and it sealed well. Good buy!
Jennifer Hamilton
Reviewed in the United States on December 13, 2020
Great value for the money and the great part is that I didn’t have to fight the crowded stores to get them!
Leona Rapp
Reviewed in the United States on January 15, 2020
Have ordered these envelopes before, and have never had a problem with them. Will definitely order them again in the future. Great price!
B Freeman
Reviewed in the United States on March 18, 2019
not gummed, you have to moisten the flap. The envelopes are perfect for #10 size checks. the windows allow for the address fields to be visible and not a lot of the rest of the checks. The envelopes come in a very sturdy cardboard, not chipboard, box. We will be reordering these. Thank you for a good product.
Jacki
Reviewed in the United States on March 26, 2018
Works well with our Quickbook invoices. We did not want to alter our invoice template so we just need to pay a little more attention to folding to have the upper window (return address) align. The bottom window is perfect. These do not work with our checks but really, who writes checks much anymore? lol For the price, we will happily adjust our invoice folding techniques and save HUNDREDS of dollars on envelopes throughout the year. Great deal, good product. Received the 4 boxes in lightning fast time!
Anna
Reviewed in the United States on August 4, 2017
Great envelopes. I give 5 stars because they were all handled perfectly through shipping and arrived without one even slightly bent. I use these in a Neopost SI-62 folder/inserter and these are by far the most consistent I have found. Never jams thanks to the high quality!
Nancee Reimann
Reviewed in the United States on June 9, 2017
These envelopes are larger and the windows placed differently that what I expected. I thought that I had checked them out in detail, but I guess they are not the same as what I had been using.
Recommended Products