I'm guessing there is a pretty good temp gradient in the room roof to floor. But our shops down here are mostly metal buildings with roof peak vents so hot air goes up and out anyway. I first heard of these things back during hurricane Ike when folks were using generators. I believe there is an option to run a vent pipe outside in an enclosed room application.


Allen
Yeah, well, that's just like, you know , your opinion, man - The Dude

1948 Chevy 3600 - goal Original restoration, Current Stage 1 - Disassembly and getting body in primer
1954 GMC 3100 goal Hot Rod, Current Stage 1 - Get body in primer
1931 Ford Model A 5 window Coupe - Old Skool Hot Rod
1945 Ford 2N Tractor - Runs great
1964 Ford 2000 Tractor - Use it every week
1974 Stingray Corvette