Mr. Heaters 38,000-BTU Forced-Air Propane Heater heats up to 950 sq. ft. and does so running 50% quieter than a standard propane heater thanks to Quiet Burner Technology. Hook up the provided 10-ft. propane hose and regulator assembly to a 20-lb. propane cylinder (not included) and use the factory-installed piezoelectric ignition to reliably start heating. The odorless, clean-burning heater operates up to 12 hours on a 20-lb. propane cylinder. Thermoelectric safety valve shuts off gas flow if the flame ever goes out. Factory-installed high-limit switch prevents overheating. Manufacturers one-year warranty. 20.25L x 9.5W. Wt:17 lbs. Type: Heaters.