Portable and easy to use, heater connects to a 1-lb. propane cylinder (not included) • 4,000 or 9,000 BTU per hour pumps out heat for up to 225 sq. ft. • One-button control: just rotate knob to pilot and push • Tip-over safety shut-off, automatic low oxygen shut-off systems • Fold-down handle increases portability • Can connect to 20-lb. propane cylinders with optional hose and filter • CSA certified for indoor and outdoor use