High bay racking places special demands on the need for a uniform vertical lighting in often very narrow aisles or gangways. Up to a mounting height of 15m, trunking systems for fluorescent lamps with a special narrow beam reflector technology satisfy these requirements. With greater mounting heights, reflector luminaires with high pressure lamps in connection with the above mentioned reflector technology are preferred. In cold stores, damp proof luminaires are deployed. Due to safety regulations, the entries and exits of warehouses are of special importance: lighting solutions must offer a fluent transition from the brightness level inside to possibly varying lighting levels outside.