We just replaced the old 12v vent fan in the bathroom of our '90' model Shadow Cruiser with a Fanatic Fan manual 3 speed reversable. Have to leave the door open for sure on anything past low, but oh baby turn it on medium or high, pen the escape vent over the bed only about 1-1 1/2" and in not extreme nighttime temps that puppy swirls the coil air around the bed and our the back. Blanket required if you're a heat lover. Me, I'd rather have a cold nose and cover up than be hot! But that's just an old, fat, post menopausal woman who's internal thermostat was set at birth in Michigan, in March! We did install the Max Air cover made for this fan as my memory doesn't always kick in on closing that obscure, well hidden vent every time. Insurance is better than repairs.