Do it Double Weatherproof Outdoor Lamp-holder
Double lampholder with cover has 180 deg. adjustable head with positive locking, threaded for 1/2" outlet, 6" wire leads, and porcelain socket. Made of corrosion-resistant aluminum, finished with a protective color coating. Uses up to two 150W PAR 38 floodlight bulb, 120V. For wet locations. Carded. UL listed.