Your last step in winterizing or storing your boat should be to plug in your Caframo Stor-Dry Warm-Air Circulator. This handy, whisper-quiet drying fan uses a low-wattage heating element and enclosed fan to gently circulate warm air through the closed space, eliminating the stale air pockets that can cause mold, mildew, and musty odors. The Caframo Stor-Dry is rustproof, simple to install and designed for long-term trouble-free operation with extremely low power draw. 120V AC. 10 dia. x 4.8 H. Cancer and Reproductive Harm- www.P65Warnings.ca.gov.