We were putting together a membership mailing for a non-profit; the members were being asked to mail back their dues and update their member files. These envelopes were just the right size to slide inside our outer letter-size envelopes without folding.
The envelopes are just the right size for what I have to send out. I purchased 2 boxes; I am about half way through one of the boxes. I've found several of the envelope's flaps partially stuck to the envelope itself. Now we have to tape some of the envelopes. They were probably stored in a damp environment. This is now increasing my workload and requires the use of additional supplies to seal the envelopes.