SPECS: 8,000 BTU Heats up to 290 sq ft DESIGN & DETAILS: Mr. Heater catalytic heater is designed for efficient radiant heat on the move Utilizing the catalytic reaction between propane and oxygen to keep the heat coming even with minimal use of fuel Mr. Heater has kept the pilot on and added a tip-over switch to maximize safety when operating Runs on low pressure liquid propane with a hose and regulator assembly (sold separately) Safety features include oxygen depletion safety shut-off system and tip-over safety shut-off