Perko 13" Horizontal Fold Down All-Round Boat Navigation LightThis Perko 13" Horizontal Fold Down Boat Navigation Light features a frosted globe that allows for a reduced glare at night. It has a black polymer top with a black polymer base. The fold down, adjustable angle makes it easy to use and easily adaptable. It is certified for use on power driven vessels up to 20 meters (65.6 ft.) in length and has a polymer adapter available for flat or V type mounts. This boat navigation light contains a notch for through-base wiring and can be used on windshields, T-Tops, rails, arches and hard tops.Features: Black Polymer Base; Black Polymer Top With Clear Fluted Lens & Frosted Globe; Fold-Down, Adjustable Angle; Reduced Glare Design; Certified For Use On Power Driven Vessels Up To 20 Meters (65.6 ft.) In Length; Polymer Adapter Available For Flat Or "V" Type Mounts; Contains Notch For Through-Base Wiring; Can Be Used On Windshields, T-Tops, Rails, Arches, and Hard Tops; Specifications: Vertical Height: 13-3/8"; Overall Height: 14-3/4"; Screw Size: #8; Pole: 3/4" Diameter Anodized; Dimensions: 2" x 1-1/2"; Bulb: 12 Volt (Included); Click here to download Perko 13" Horizontal Fold Down Boat Navigation Light Installation Instructions