The Dyna-Glo 18,000 BTU Portable Propane Cabinet Heater is ideal for outdoor/indoor construction, as well as industrial & commercial applications, making it an excellent choice for your portable heating needs. The RA18LPDG provides infrared radiant heat in areas up to 450 sq. ft. for your patio, deck, workshop or campsite. Enjoy up to 64 hours of operation when connected to a 20 lb. propane tank (not included). This heater includes an locking casters, side carrying handles, and variable heat controls to adjust the output to your desired temperature. It is equipped with an oxygen depletion sensor and tip-over protection and to ensure safe use and is CSA listed. Piezo Ignition with Heat Controls Side Carry Handles 3 Plaque Heating System Front Safety Grill Oxygen Depletion Sensor (ODS) Locking Casters