DBF 4XL is a duct booster fan designed for boosting air on demand. The product is equipped with a 5 feet power cord, pressure-sensing switch that activates the fan once positive pressure is sensed in the duct line. The switch shuts the fan off when the pressure in the duct normalizes.
- Performance certified by HVI; safety certified by ETL to UL507.
- Galvanized metal housing
- Pressure-sensing switch
- 5 feet power cord for 120V/1~
- Suitable for 4” ductwork