Duraflame propane forced air heater heats garages, decks, patios, worksites and more quickly and efficiently You've seen heaters like this everywhere from football field sidelines to worksites. This model features adjustable heat from 120,000 to 160,000 BTUs per hour and operates up to 17 hours on a 100lb. LP cylinder (not included). Also features continuous spark ignition, built-in thermostat, 400 CFM blower, standard regulator and hose, adjustable tilt to direct warmth where you need it most and diamond plate pattern. For use with 100lb. propane cylinder (not included). Approx. 25-5/8" x 10" x 17-1/2".