Tjernlund DB-2 Duct Booster Fan - High Velocity HVAC Airflow Fan for Home & Commercial Ventilation - Perfect for Attics, Basements, and Grow Rooms

Inline Duct Booster, Housing Material Galvanized Steel, Fits Duct Dia. 5 to 8 in, Voltage 120V, Max. Amps 0.51 A, Max. Wattage 40, Number of Speeds 1, Length 7 in, Motor RPM 1550, CFM @ 0.000-In. SP 275, CFM @ 0.400-In. SP 220, CFM @ 0.450-In. SP 180, CFM @ 0.500-In. SP 100, Max. Inlet Temp. 200 Degrees F, Inlet and Outlet Dia. 5 to 8 in, Includes Mounting Template