Broan's exterior blowers offer you powerful ventilation performance at its very quietest, and something you won't find anywhere else - Broan quality. Using an exterior blower system helps to reduce kitchen noise by locating range hood blowers outdoors. The residential design fits unobtrusively on your home exterior. The unit is built with durable, weather-resistant, all-aluminum construction that is designed to mount on the roof or outside wall. Designed for use with our professional style Rangemaster RM60000 and 64000 series (332KR rough-in kit required), EX Series chimney hoods, RMPE and RMIP power packs.