This vintage ship salvaged Hallborn brass nautical light measures about 8 1/2 inches long from the back of the mount plate down to the tip of the cage, and will extend out from the mounting surface by about 7 inches. The back mount plate measures 5 1/4 inches wide.  We have installed two copper plugs in the original conduit holes on either side of the light.  This vintage Hallborn brass nautical light weighs almost 5 pounds.