Horizon 8-Inch Titan Air Cooled Reflector Bulb with 26 by 29-Inch Grow Light Reflector Hood Measures 26" x 29" x 10"; 8" diameter integrated fittings (flanges) on both ends Highest quality German reflective specular aluminum (95-percent Reflective); Excellent uniform light output Includes integrated light socket and 15' cord; Standard universal type cord connector Hinged tempered glass for easy bulb access; Completely sealed (Airtight) for maximum airflow over bulb Square design maximizes light for square or circular growing areas; Compatible with Magnetic and Digital Ballasts; Accepts all sizes MH and HPS bulbs