Folds down 90° in either direction along the plane of attachment plate of the mount. Vertical height 14”. Base dimensions: 2-1/4” x 5/8”. Vertical Mount. Black polymer top and base with zinc alloy, clear polymer lens. Gold plated contacts. 3 mile visibility. Use on sail or power driven vessels under 20 meters in length. 3/4” diameter anodized aluminum tube. Uses #8 fasteners. (2) 12 volt bulbs included.