The Maxon 300CMA11BA11BB21A0 Corporation 3"GasVlvFlgd 115vW/VCS-VOS CP is a gas-fired, indirect-fired, horizontal furnace with a nominal input of 11,000 Btu/h It has a nominal output of 9,000 Btu/h and a nominal heat input of 2,000 Btu/h