2.5T-3.5T The RunTru A801X060BM4SDBA gas furnace offers dependable 80% AFUE heating with a 60,000 BTU capacity, ideal for residential applications. Designed for multi-position installation—upflow, downflow, or horizontal—this unit features a 9-speed ECM blower motor and silicon nitride hot surface ignition for long-term performance and energy efficiency. Suitable for both natural gas and LP (with conversion kit).