The Original SUNHEAT portable propane restaurant patio heater features a classic umbrella design used at commercial resorts and entertainment venues at an affordable price. The large four piece aluminum reflector projects 46,000 Btu's of heat out over an 18 ft Dia allowing you to extend your outdoor living area to be used year round. The heat output and cozy glow are easily adjusted by turning the temperature control knob which is conveniently located on the front of the heater. The push button ignition system makes this unit simple and safe to operate. It will run up to 10 hr on the highest setting. The PHRDBK model comes with a 1 year warranty. Whether it's a family gathering or a business party the Original SUNHEAT patio heater will add warmth and style to any occasion.