Broan 335 Exterior Blower for 10-Inch Round Duct, 1200 CFM 3-Amp Reduce kitchen noise by locating range hood blowers outdoors Designed for use with our professional style broan elite rm60000 and 64000 series (332kr rough-in kit required) Ideal for custom hoods Durable, weather-resistant, all-aluminum construction that mounts on the roof or outside wall 18-inch width by 10-inch depth by 29.5-inch height