Norcold Optical Display Board 639551 (fits select N7LX, N8LX and all N10 models) This optical fits all N10/ NA10 models and select Norcold Polar N7 and N8 models: N7LX NA7LX N8LX NA8LX N10LX NA10LX If your model does not have an "L" before the "X" in your model number, you need: ... See More