Invent series, 80 cfm, single speed bath fan, .8 sones, 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, energy star qualified.