Great for camping, hunting, picnics, and other outdoor activities, this lightweight, easy-to-use tank-top heater directly connects to a propane cylinder to deliver heat for up to 30 hrs. High/Med/Low regulator for variable heat output settings (10,000 BTU/hr.; 12,000 BTU/hr.; 15,000 BTU/hr.). Tip-over safety shut-off valve shuts off automatically with loss of flame. Delivers instant heat. For use with a 5- to 20-lb. propane cylinder (not included). For outdoor use only.