LOW/MED/HI control knob and electronic spark ignition. Comes in sizes that heat 300 to 1,000 sq. ft.. Made from aluminum in all-white finish. Choose from the available fuel-type/BTU options. Blue flame technology . Manual thermostat. Oxygen depletion sensor and overheat safety. Includes wall mounting bracketOne-year manufacturer warranty. Donâ€™t be cold! The easy-to-mount Dyna-Glo Manual Vent-Free Wall Heater is an excellent choice for bringing cozy warmth to your home, workshop, or office space. Simply hold down the battery-operated, push-button igniter and you can evenly heat the entire room. Thereâ€™s a model available for every situation! Each design features an all-white finish and modern aluminum frame, plus the stunning blue flame technology, but you also have the option of choosing either an LP- or propane-fueled unit. And thatâ€™s not the last of the options Hayneedle has to offer! After selecting the LP and propane-fueled design you want, pick the power level that most matches your needs from heaters that generate up to 10,000 BTUs (300 sq. ft.), 20,000 BTUs (700 sq. ft.), or 30,000 BTUs (1,000 sq. ft.) of soothing warmth. Dimensions:10,000 BTU Heater: 17.32W x 9.49D x 20H in.20,000 BTU Heater: 20.94W x 10.08D x 24.02H in.30,000 BTU Heater: 28.07W x 10.51D x 24.09H in.