This Commercial 277V DE Open Lighting non-dimming System features state-of-the-art double-ended technology that uniformly delivers optimum PAR value over a broad footprint.Ballast features:• High-precision microprocessor control • Robust commercial design • Superior reliability • Internal RF shielding • Patented ignition control • End of lamp life signal • Auto-restrike feature protects valuable lamps from damaging power interruptions • Cooling fins for maximum heat dissipation • Suitable for use in damp locations DE1000Lh (Open) Reflector features:• Double-ended system delivers higher PAR value with excellent uniformity • Open design for maximum light output, optimum heat management, and longer lamp life • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity • Provides a broad, consistent light spread • Compact design minimizes interference with sun in greenhouse applications • The ideal reflector choice for lower mounting heights • Requires fewer reflectors to meet desired light levels • Highly efficient in overlapping multi-light configurations • European-made VS K12 x 30s high temperature lamp holders • Patented reflector design: D731,109 (and other patents pending)