HTG Supply 400-Watt High Pressure Sodium (HPS) Complete Grow Light, Bulb Included Electrical: 400 watts, approx. 3.33 amps @ 120v ; ballast features built-in 10' power cord with standard-household grounded plug (NEMA 5-15) and built-in 10' socket-to-ballast cord with mogul-base socket Innovative open-air remote ballast design ; ballast handle features key holes for easy wall mounting Includes high-output 400-watt high pressure sodium (HPS) bulb with enhanced horticultural spectrum & 55,000 lumen output Suggested coverage area: 4' x 4' Ballast measures: 9" long x 4" wide x 5.5" high ; Reflector measures: 16" long x 13" wide x 6" deep - hanger attachment hardware included