Designed and approved for indoor and outdoor use Heats up to 225 square ft. Runs off a 1 lb. cylinder Fold down handle for compact storage Swivel out regulator for easy fuel connection  Features emergency low oxygen safety system Emits 4,000 or 9,000 BTU/hr radiant heat For use with propane gas  Single control start knob  Hi-Low heat settings  Includes Piezo igniter Connects directly to a 20 lb. cylinder with optional hose and filter The distinctive RED Mr. Heater Buddy that has delivered comfort and safety for decades