Norcold 631365 Optical Display Board (FITS THE NX641, NXA641, NX841, NXA841 MODELS)

Norcold 631365 Optical Display Board (fits the NX641, NXA641, NX841, NXA841 models) Norcold 631365 optical board that fits all NX and NXA models, regardless of serial number. Here are the models it works with: NX641 NXA641 NX841 NXA841