Perko "Classic" Combination Boat Bow Navigation LightThis Perko "Classic" Combination Boat Bow Navigation Light features chrome plated zinc alloy with a flag staff socket. It comes with a Starboard (green) and Port (Red) light with red/green lenses. It is certified for replacement use only on power driven vessels up to 39.4 ft. in length and includes a 12 volt bulb. With 1-Mile of light visibility, this boat bow navigation light will provide exceptional satisfaction among many buyers.Features: Comes With A Starboard (Green) and Port (Red) Light; Red/Green Lenses; Chrome Plated Zinc Alloy; Flag Staff Socket; Certified For Replacement Use Only On Power Driven Vessels Up To 39.4 ft. In Length; Includes 12 Volt Bulb; Specifications: Screw Size: #8; Visibility: 1-Mile; Base Dimensions: 6-3/4" x 3-7/8"; Product Note:Can be used as 12 or 24 volt ABYC A-16 certified replacement lights only on boats built prior to 11/01/2003. To use as 24 volt lights while maintaining A-16 certification, replace the bulbs with 24 volt bulbs.Click here to download Perko "Classic" Combination Boat Bow Navigation Light Installation Instructions