The Tjernlund Induced Draft Blower For Boilers is designed for use with oil or gas fired boilers up to 300,000 BTU. It features a 1/3 HP motor that provides 115 CFM airflow at 0.4 inches static pressure. The blower housing is constructed of heavy gauge steel and painted for durability. It has a 6 inch inlet and 4 inch outlet diameter. The motor is thermally protected and the blower wheel is balanced for quiet operation. This induced draft blower provides the balanced draft needed for mid-sized residential and commercial boilers.