Stay cozy and warm with the Mr. Heater(R) Big Buddy Portable Heater - Massachusetts Version. The piezo igniter provides a powerful spark that allows the heater to warm up to 450 sq. ft. With a high setting of 18,000 BTU/hr., the Big Buddy Heater provides powerful heat. Integrated safety features include an automatic low oxygen shutoff and an accidental-tip-over safety shutoff. DESIGN Portable heater High/medium/low settings Single control knob Heats up to 450 sq. ft. Fold down handle Use with (2) 1 lb. propane cylinders TECHNOLOGY Automatic low oxygen shutoff Integrated Piezo igniter Accidental tip-over safety shutoff Two swivel regulators adapt to 20 lb. propane cylinder by using a hose and filter SPECS Dimensions: 19" x 12" Weight: 17.1 lbs. Low setting: 4,000 BTU/hr. Medium setting: 9,000 BTU/hr. High setting: 18,000 BTU/hr. Additional Details Maximum Elevation: 7,000 feet This version is approved to ship to Massachusetts Model: F274806Z