Quiet, odor-free, instant heat anytime. Designed and approved for indoor use, this easy to carry heater features a low oxygen safety shutoff pilot to provide safe, reliable pro-pane heat in either free-standing or wall mount mode. 4,000 and 9,000 BTU settings heat up to 200 square feet. Uses 1 lb. or 20 lb. propane cylinder (20 lb. to be used outdoors only) with optional hose connection. Certified by CSA International (American Gas Association). 14"L x 7"W x 14"H.