Mr. Heater MH9B Portable "Buddy" Heater 4, 000-9, 000 BTU/HR.

Features Cylinder not included 4, 000 and 9, 000 BTU/hr Automatic low-oxygen shutoff system Accidental tip-over safety shutoff Heats up to 200 sq ft Connects directly to a 20-lb cylinder with an optional hose CSA certified Not designed for permanent installation or for use above an altitude of 7, 000 ft