One mile combination sidelight for boats up to 39.4' (12m) in length. Narrow base allows mounting on narrow decks or gunwales. Lamp and socket are completely contained inside the housing. Die-cast Zamak with Perma-Plate chrome finish. Includes one 7.5 watt lamp. Dimensions: 2 1/2" high X 3" long X 2 5/8" wide (at base). Base is pre-drilled with two countersunk holes for #10 screws.