The Panasonic WhisperGreen-Lite FV-13VKSL3 Ceiling Mount Bathroom Fan - ENERGY STAR is an efficient residential fan that contains a DC motor that ensures an extremely quiet and energy efficient operation. This efficient, cool running motor does not create excessive heat while the built-in damper prevents the outside air from coming into the room. The adjustable mount brackets and uncomplicated wiring makes installation extremely easy. It also features a double-hanger bar system for ideal positioning. * ENERGY STAR rated * 130 CFM, 0.8 sones * Includes 32-watt light and 4-watt night light * Fits a standard 6 -inch duct * Grille dimensions: 13L x 13W inches