The Mr. Heater 40 000 BTU Radiant Propane Garage/Workshop heater directs line of site radiant heat to floor-level objects which in turn heat surrounding air to the desired temperature. Personnel and objects at floor level enjoy instant cost-saving comfort. Ideal for use in garages or workshops to keep cars tools and yourself warm and comfortable. 99.9% efficient it transfers almost all of the fuel it burns directly into clean safe radiant heat. Has a power pile thermocouple ignition with manually lit pilot so no electricity is required. Also has a safety shut-off on the pilot and burner and ships with a thermostat hanging brackets and chains. Consult the user manual for installation instructions and for clearance to combustible guidance.