This Mr. Heater Big Maxx™ Natural Gas High-Output Commercial Unit Heater is quiet and vented for easily heating a large 6700 sq. ft. building. The low-profile design requires only 1in. clearance from the ceiling and delivers 200,000 BTU output. Includes LP conversion kit for easy change over. Easily installs using 3/8-16 threaded rods (sold separately). CSA certified.

Thermostat not included.

• Requires only 1in. clearance from ceiling with threaded rods (sold separately)
• Spark Ignition with self diagnostic control module
• Designed for right or left side piping, electrical and flue connections by simply rotating 180°
• Aluminum tubular heat exchanger for maximum efficiency and longer life
• Ships as Natural Gas unit (includes LP conversion kit)
• Easy external access for thermostat connections and AC terminals