Power Venter, Application Oil Heating, For Fuel Type LP, Natural Gas, Oil, For Appliance Type Boilers, Furnaces, Water Heaters, Maximum Vent Pipe Diameter 4 in, Maximum Heater BTU Input for Gas Appliance 180,000 BtuH, Maximum Heater BTU Input for Oil Appliance 168,000 BtuH, Inlet Diameter 4 in, Outlet Diameter 4 in, Nameplate Voltage 115V AC, Current 2.3 A