Norcold Optical Display Board 637081 (fits the 2118 models) DISCONTINUED This is the front Optical Control/ Display board board for all 2118 model refrigerators, regardless of serial number. Fits these Norcold refrigerator models:2118 series: 2118, 2118IM, 2118IMD, 2118BK, 2118IMBK, 2118IMBKD, ... See More