Rectangular Reflector Marker/Clearance Light, Red, Poly pack. Rectangular clearance or side marker light with a reflectorized lens, eliminating the need for a separate reflector to meet DOT requirements. Twist-in socket contains both lead wire and ground wire for mounting to all surfaces. Features Snap-On, replaceable lens and easy to change replaceable bulb. All-weather molded plastic housing and durable lens protect against corrosion. Dimensions: 2 inch x 4 inch x 1-1/8 inch deep.