Norcold Optical Control Overlay Assembly 623886 (fits the 3-way N510/ N410 models)Fits these Norcold refrigerator models:N410 / N412 series: N410.3, N410.3UN510 / N512 series: N510.3, N510.3U This is not the optical board itself, simply the plasti overlay that runs along the top side of the refriger... See More