Sounds like a good arrangement. Once I get the solar vent opener in and get over the fact that I've probably lost an entire tray of seedlings, I'll look into the venting into the house option. Thanks Carolyn, already I'm enjoying this list. Leslie -- If you need me.. I'm in my greenhouse, happy as a lark :) http://community.webshots.com/user/trapperboss USDA Zone 6a (The Garden State)