The PrimeGlo HIL-1P Parasol Patio Heater is for indoor / outdoor use and 1500 watts heats up to a 1000 sq ft area. It's cast aluminum frame and 3 infrared burners mount to any umbrella parasol and is powered by a standard household outlet while infrared heat remains unaffected by the wind. The HIL-1P also features a safety anti-tilt switch, variable temperature control and is quick / easy to assemble.