110 CFM and nearly silent operation 0.7 Sones * 6-Inch ducting for superior performance * Motor engineered for continuous operation * UL Listed for use over tub/shower with GFCI circuit * Housing Dimension: 10-1/2-Inch by 11-3/8-Inch by 7-5/8-Inch - Fits 2-Inch x 8-Inch construction and Grille Dimension: 13-Inch by 14-Inch