Efficient, heats radiantly, directly, no loss of heat to the air Fast, reaches full output in seconds Economical, no electricity required Convenient, fully assembled, ready to use Quiet, no noisy annoying blowers Durable, made of rugged quality materials Problem-free, no moving parts, minimum maintenance For outdoor use only; ; Variable BTU's: 8, 12 and 15 000 BTU/hr Adjustable heat control: high, medium, low regulator Safe: heater shuts off automatically with loss of flame Ready to use: mounts directly to a 5 to 20-lb. propane cylinder (not included) Operating time: high, up to 30 hours on a 20-lb. cylinder Weight: 3.3 lbs. Max BTU Rating 15000 BTU/H Min BTU Rating 8000 BTU/H Power Source Propane Type Radiant Heat Voltage 115 V