Die-cast aluminium housing and frame. Pre-treated before powder coating ensuring high corrosion resistance. Single cable entry, through wiring upon request. Stainless steel fasteners in grade 304 with zinc flake coating (ZFC. Durable silicone rubber gasket. High-efficiency glass lens. Integral control gear. Recessing box in high-density polyethylene is included. To ensure efficient drainage, gravel must be used to a depth of 450 mm and width of 300 mm beneath the housing and should also be placed around luminaire. Suitable for drive-over with a maximum load of 4,000 kg for MK-60249, MK-60259, 2,000 kg for MK-60269, 1,000 kg for MK-60729. Vehicles with pneumatic tires can drive over the luminaire but the speed must not exceed 10 km/h. Load is transferred by the housing to the foundation