Lava Heater is constructed from stainless steel, aluminum and powder coated metal. It can withstand whatever Mother Nature has in store – wind, snow, rain and sleet have no effect on a Lava Heater. Completely self contained and water resistant, the unit will remain lit under virtually any weather condition. The flame is contained in a specially designed glass tube made from Borosilicate glass that can produce an astounding 61,000 BTU. It is incredibly strong and shatter resistant. Lava Heaters are constructed to project abundant heat, while its protective metal screen prevents people from getting hurt.