Superior FOSTORIA lighting at the dock and in the trailer assures worker safety plus accurate loading and unloading. These premium dock lights, made in the USA, are UL listed and CSA certified. (01) aluminum shade accepts R40, ER40 or PAR38 bulbs (not included) up to 300 watts. (03) 500-watt halogen (bulb included) models provide 11,000 lumens—ideal for longer trailers. Cast aluminum weathertight housing for use in semi-protected outdoor areas. ISO 9001 certified.