VIVOSUN Compact Reflector Hood for Double Ended HPS Lamps with 98% Reflective Italian VEGA Aluminum STRONG, UNIFORM LIGHT DISTRIBUTION: Compact 17x9.2wing reflector concentrates light to help plants grow quickly in small spaces; carefully textured surface scatters light evenly EXCELLENT REFLECTIVITY:Lined with premium Italian VEGA aluminum for a reflective rating of over 90% reflectivity and textured to eliminate hot spots RUGGED BUILD: With shielded terminals and metal plate reinforcements on each end, this reflective hood is rugged, stable and safe. Comes with built-in socket, 15' pre-wired lamp cord ( no bulbs included) DOUBLE ENDED FOR SUPERIOR RESULTS: Quality double-ended lighting systems deliver the highest-quality light evenly, without obstruction, and last almost twice as long as single-ended ones ECONOMICAL AND ENERGY EFFICIENT: Double-ended HPS models provide 35% more available energy than single-ended HPS lamps; enjoy heavier harvests and lower energy bills