Overview Reviews Product Description Norcold 639572 Gas Train Assembly Kit for Polar N7/N8/N10 Series RV Refrigerator Norcold 639572 Product Videos Custom Field Product Reviews Write a Review Write a Review × Norcold Norcold 639572 Gas Train Assembly Kit for Polar N7/N8/N10 Series RV Refrigerator Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *