The Patio Comfort (NPC05AB) 41,500 BTU Infrared Natural Gas Portable Post-Mount Patio Heater features a commercial-grade aluminum construction with antique bronze finish, 34 inch one-piece anodized aluminum reflector, up to a 10-15 foot radiant circle of heat, stainless steel infrared burner that emits 41,500 BTU's of heat, stainless steel fasteners, convenient push-button piezo electric ignition system, oxygen depletion sensor (ODS) that will shut the unit off if there is inadequate oxygen in the area, auto-off tilt protection that will shut the patio heater off if it is tilted over 30 degrees, and safety pilot system to stop the flow of gas if the burner goes out. This post-mounted heater comes complete with a permanent in-ground post and 12 foot CSA approved, steel-lined, vinyl wrapped natural gas connector kit with two solid brass quick disconnect couplers and completely pre-assembled post internals. The unit requires an 18-inch clearance from the top and sides and includes wheels for easy portability. For outdoor use only. UL approved. All Patio Comfort patio heaters are shipped in TWO cartons: one carton contains the patio heater, the second carton contains reflector.