Ceiling mounted forced air propane unit heater turns garages, barns and workshops into heated workspaces 80,000 BTUs heat up to 2,667 square feet Color may vary between grey and tan Compatible with standard 24-volt or new Wi-Fi enabled thermostats (sold separately) Low profile design 10 ft minimum ceiling height with 8 ft clearance required from base of heater to floor High temperature safety shut-off switch and gas safety shut-off flame sensor