Truck-Lite has developed two new mounting grommets, "closed back" and "semi-closed back", for our popular 60® Series 6" Oval Lighting Products. The "closed" back grommet will help prevent water and dirt from being splashed onto the back of the lamp and electrical connector, reducing corrosion and premature electrical failure. The "semi-closed back" grommet protects against corrosion where the connector plugs into the lamp while still maintaining enough air flow so heat generated by the incandescent bulb will escape.