DESC: LP/Propane Convection Heater heats up to 600 sq. ft. and runs approximately 17 to 29 hours on a full 20 lb. propane cylinder. It has adjustable heat output from 15,000 to 25,000 BTU/Hr. It has a piezo ignition, come with hose and regulator, and no electricity is required. Great for workshops, sheds, work sites, and outdoor recreational activities.