Rheem 6210521701 Integrated Furnace Control Board (IFC)For use with Models R801TAJM R801TAJF. R801TAJW R801TAJQ and R801TAJX Please note: All control boards are non returnable. We ask that you double check that you have the correct part number before ordering. Control Boards are still eligible for the original manufacturer’s warranty. We can facilitate the warranty process for you and provide you with a list of required documentation.