QuFresh BC Series Bath Fans are a cost-effective, yet modern solution for home or commercial use with fans from an 80 - 100 CFM operation for continuous odor ventilation, mildew prevention, and moisture reduction in a bathroom or other room needing a ventilation fan system. Constructed using a galvanized steel housing and 4 in. polymeric duct connector with a spring-installled polymeric grille cover. This exhaust fan includes hanger bars and mounting tabs for installation anywhere between 16 in. to 24 in. on-center joists and a plug-in motor with wiring knockouts on the housing. The PSC motor requires little maintenance and has an unrivaled quiet, low sone operation in this series from 0.8 to less than 0.3 sones. Order with a humidity sensor (BCHUMSR) or motion sensor (BCMOTSR) to customize your vent fan, and a radiation damper (BGCRD) to meet local code requirements.