Waterproof, sonically sealed, single diode trailer clearance or side marker light for quick and easy retrofit of incandescent lights. 2-1/2"W x 1-3/16"H x 1"D. Note: This is a replacement lens and light housing. Mounting base is not included and unit is designed to fit into your existing mounting base. Retrofits incandescent lights Waterproof trailer light 2-1/2"W x 1-3/16"H x 1"D | Waterproof LED Fleet Count Sealed Trailer Marker/Clearance Light, Red