Air King BFQ 140 High Performance Bath Fan, 120-CFM, BFQ140

Features: Easily Installs Using the Included Snap-In Mounting System UL Listed for Installation Over a Tub or Shower on a GFCI Circuit Plastic damper protects against back drafts and ensures quiet operation 4" Round Duct Effective Ventilation For Bathrooms Up to 110-150 sq. ft. CFM: 120 Sones: 4.0 Housing Length: 9-1/16" Housing Width: 8-1/2" Housing Depth: 4-3/4"