15000 - 25000 BTUs Heats up to 600 sq. ft. Outdoor and Indoor Construction/C...15 000 - 25 000 BTUs Heats up to 600 sq. ft. Outdoor and Indoor Construction/Commercial with proper ventilation Continuously Variable BTUs 360° Heat Radius Included hose and regulator assembly Auto Safety Shutoff Aluminized Steel Construction Heater...more