Broan-Nutone 154 1250-Watt Wire Element Ceiling Mount Heater, Chrome alloy, wire element for instant heat, low-profile housing with satin finish aluminum grille extends only 2-3/4 inch from ceiling with 11-inch diameter, built-in fan disperses heat evenly, automatic overheat protection, permanently lubricated motor. Mounts to standard 3-1/2 or 4-inch round or 4-inch octagonal ceiling electrical box. 1250W, 120V, 10.42A, 4266 BTUs.