Used Dayton 75000 natural gas unit heater, standing pilot, perfect for a garage. This direct spark propeller unit heater fired with tubular gas is designed to be suspended within the heating room. It works on NG or LP gas with the conversion kit included, and it is field-convertible with an authorized vent package for separate combustion. Multi-stapled rails permit multiple O.C. Differences. ETL Licensed to venting specifications of both Classes I and III. Approved for residential garage, commercial, and industrial construction. Available separately; 24V thermostat required; Power venting enables horizontal winding around side walls Tubular heat exchanger and single burnerdesign.