The 907BYY100 is a two-stage, forced-air, gas-fired space heater manufactured by Honeywell. It is designed for heating residential and commercial spaces. The unit is powered by natural gas and has an input rating of up to 100,000 BTU/hr. It features a sturdy, insulated cabinet and a durable heat exchanger. It also includes a blower assembly that helps to circulate heated air throughout the space. The heater has an electronic ignition system and can be controlled with optional timers, temperature sensing, and other accessories. It is also certified for installation in mobile homes, cabins, and recreational vehicles.