AC/DE 8inch Double Ended Air-Cooled Reflector Galaxy DE Select-A-Watt Double Ended Electronic Ballast Gavita Pro Plus 1000w 400V EL DE Lamp SunGrip Light Hangers 1/8 in White AC/DE 8inch Double Ended Air-Cooled Reflector Unique double ended construction allows for maximum optical efficiency and uniformity. Full spectrum DE lamps used in this fixture focus on the red component for increased photosynthetic response. They offer improved PAR values and increased PAR/lumen maintenance (up to 90% PAR at 10,000 hours of operation). The AC/DE's patent pending design allows removal of heat generated by the lamp without cooling the lamp below proper operating temperature. 95% reflective textured German aluminum interior with 98% reflective corner inserts offer excellent uniformity, output and diffusion. Galvanized steel housing with durable powder coated finish.‘ Manufactured with exacting standards and double neoprene gaskets for an air tight seal.' Hinged glass makes changing lamp and cleaning glass easy. Detachable 15' lamp cord at the reflector and at ballast. 5 year warranty. Galaxy DE Select-A-Watt Double Ended Electronic Ballast Galaxy DE Select-A-Watt is the latest addition to the Galaxy® Electronic Ballast line. Features High Frequency of 105 khz microprocessing technology for running double ended lamps. This Galaxy DE Select-A-Watt ballast can operate a 1000 watt lamp at 600, 750, 875, 1000 watts and Turbo Charge®. This ballast will properly drive 600, 750 and 1000 watt lamps. Set the desired wattage on the Select-A-Watt® dial and install the correct lamp. Very quiet operation and limited vibration. Thermally optimized non-fan cooled aluminum housing. Pre-wired dual universal lamp cord receptacle (Sun System) Detachable 120 Volt Smart Volt Power Cord (240v cord sold separately here) FCC compliant Dimmable settings are: 600w, 750w, 875w, 1000w, 1150 Turbo Gavita Pro Plus 1000w 400V EL DE Lamp Gavita Pro Plus 1000w 400V EL DE (Philips GreenPower Plus 1000