Compare Quick view Watkins Watkins | PCB | IQ2020 MAIN CONTROL BOARD | 77087 MSRP: Was: Now: $687.61 Watkins | PCB | IQ2020 MAIN CONTROL BOARD | 77087 Requires:AI #3-72-8001 Main Control BoardAI #3-60-0019 / MFG #74618 Heater Relay BoardSold Separately Brand name : Watkins