Sunlight Supply's 400W Commercial Greenhouse plant light system is designed to withstand damp, hostile conditions found in greenhouse environments, providing years of performance and reliability. The ballast features an exclusive extruded aluminum ballast enclosure that will never rust and is white powder coated for a durable attractive appearance. The 400W Sun System 3 includes the midsize enclosed Sunstar German Aluminum reflector. This system combines to give six adjustment points which allows the user to customize the light, creating true optical performance and even light patterns across the canopy. Includes: 400W High Pressure Sodium Bulb/Lamp, Ballast, Midsize Sunstar Reflector and power cord. This fixture can be wired for any voltage with a standard plug or for hard-wired applications.