PERKO TOWING LIGHT - 12 VOLT - 0170BTWDP1. Height overall - 3 5/8 inches. Projected overall inches - 2 1/2 inches. Width - 4 1/8 inches. European Style Navigation Light. Certified for use on sail or power driven vessels under 20 meters (65.6 feet) in length. 135 degree visibility arc. Black plastic. 12 volt. Bulb included. For Lens and shield assembly, replace the last three digits of the catalog number with the letters "LNS".