Invent series, 110 cfm, single speed bath fan, 1.3 sones, energy star qualified, versatile housing platform, allows for easy installation in both construction & retrofit applications, foldable mounting ears for easy, room side replacement, 4" duct connector mounts from the inside of the housing & a damper technology, improving air tightness scores, 10" x 9-1/4" x 5-3/4" housing.