Please note this product does not ship to Pennsylvania. About DuraHeat Since 1982, DuraHeat has been designing gas heaters and other heating products with an eye for safety and value. From the quite small to the industrially large, their heaters are all designed to get you and your home through the tough winter months. * BTUs: 400000 * 52.50L x 31.80W x 34H in. * 8,500 sq. ft. range * 120 volts