| Nearly silent operation | 1.0 Sones | 80 CFM | 4” ducting | Bright 100W incandescent lighting (bulb sold separately) | 4W nightlight (bulb sold separately) | Motor engineered for continuous operation | UL Listed for use over tub/shower with GFCI circuit | Housing Dimension: 10-1/2" x 11-3/8" x 7-5/8"- Fits 2" x 8" construction | Grille Dimension: 12-3/8" x 14"