1Application: Replacement for Atwood, associated with model series: G9?Ext; G16?Ext; GC6AA?10E; GC10A?4E; GCH6A?10E; GCH10A?4E; GE9?Ext; GE16?Ext; GEH9?Ext; GEH16?Ext. 2Replacing OE Number: 91226, AT93851 are the reference part numbers. Please double check the part number of your item to ensure perfect fit. 3Premium Material: Made of premium Abs plastic, water heater circuit module is wearproof, high temperature resistant, not easy to break. 4High Performance: Professional manufacturing, Rv water heater board will maintain the normal function of the heater, fast response, easy to control. 5High Reliability: The manufacturing conforms to the standard specification, strictly follows the factory quality control, can be used for a long time.