Deep Closed Back Mounting Grommet for 6″ Oval Lights. Fits J-60, J-652, J-68, J-64, J-67, J-66, J-63 and J-656 Series lamps for flush/recess mounting. Closed back design prevents dirt, ice and other contaminants from caking on the rear of lights and connectors. Universal design works with all industry standard lighting and cutouts. Soft 70A durometer PVC material for easy mounting and low stiffness even in cold temperatures.