Reflector measures 20 inches long x 6 inches in diameter * 1,000 watt magnetic ballast runs HPS and MH bulbs * Universal mount 1,000-watt MH lamp; 110,000 lumens * High-output 1,000-watt HPS lamp; 140,000 to 145,000 lumens * Easy Roller retractable suspension system; 24-hour timer