Hard Core Ballast: Quiet – Rugged – Dependable. 1000 watt Switchable HPS/MH. Dual Voltage – runs on 120 or 240 volts. Open ballast design is compact while still providing superior cooling capabilities that extends the life of the components. Econo Wing Reflector: Pre-wired with 15 ft lamp cord. No assembly required. Ready to install out of the box. Sturdy steel spine for added strength. Dimensions: 21” long x 15” wide x 4.5” high. Ultra Sun 1000 HPS Lamp: High quality lamp with excellent reliability. Robust construction. Horticultural spectrum lamp and 2000° K temperature is excellent for plant growth and flowering. Also includes one heavy duty Analog Timer and one set of heavy duty Rope Ratchets.