The Goodman CHPF1824A6 Cased Horizontal Flow Indoor Coils are made for split system air conditioners and heat pumps. The cabinet is painted, Architectural Gray. This evaporator coil operates with an air conditioner or heat pump of two different tonnages, the evaporator coil comes factory equipped with an orifice (Flowrater) for the small listed tonnage. If you are matching the evaporator with an air conditioner or heat pump of the higher tonnage, the Flowrater of that tonnage will need to be used.