H v I - The Home Ventilating Institute

H v i is the home ventilating institute. The organization started out with test protocols for and the interesting thing itto one od the things about where fans are rated now, they're rated at such a low static pressure. So when you buy a fan that says it's a hundred c f m fan, that's rated at almost no resistance. It's pretty good to the other way, pretty almost completely tight. I also look at it and think it looks like a heart valve. Ye. John tooley, when he had his colonoscope, he kept the vidiaofi to use it for training purposes. Bor training. Ok, not something i would think of. It's