At the risk of being the nitwit of the day and asking a stupid question, when you send a query and 5 pages, it needs to be in a large envelope, right? None of this folding into a regular business sized envelope? I am worried too much about appearances, I suppose. Give me points for having the courage to ask....
There are two kinds of envelopes that work well.
1. 9 x 12 catalog envelopes
2. 6 x 9 "half size" envelopes.
this is not a nitwit question.
If you don't know, better to ask now than discover Miss Snark has discarded you unread into the trash bin under her stiletto heel.