Power Venter Application Furnaces For Fuel Type LP Natural Gas Oil For Appliance Type Gas or Oil Furnaces Boilers Water Heaters Maximum Vent Pipe Diameter 4 in Minimum Vent Pipe Diameter 3 in Maximum Heater BTU Input for Gas Appliance 170 000 BtuH Maximum Heater BTU Input for Oil Appliance 151 000 BtuH Inlet Diameter 4 in Outlet Diameter 4 in For Vent Pipe Diameter 5 in Compatible with Brand Universal Nameplate Voltage 115V AC Phase 1 Current 1.7 A Frequency 60 Hz