Our SH Series bath fans are a great value for use at home or in a business where continuous operation is required in bathrooms or general ventilation applications. Enjoy an exceptionally quiet performance and low energy consumption using our resilient ball bearing motor and forward curved blower wheel within a sturdy galvanized steel housing for efficient odor removal and moisture reduction in your space. This unit features a removable blower assembly and wiring compartment for a hassle-free install, and an extended discharge collar with backdraft damper for easy attachment to a 4 in. duct. Add a radiation damper (NXSRD) to meet local codes for protection against instances of heat or fire.