Sun System 1 heat sync aluminum Premium remote ballast with Super Sun 21"L x 11.5"W x 6.75"H Horizontal reflector lined with a 95% reflective aluminum insert for high luminescence and louvered on both sides. Reflector features Adjust-A-Socket mechanism to center any length lamp, accomadates all HID lamp sizes except BT56. Includes tempered glass lens for UL listing and 15FT lamp & socket cord. Optional air-cool hose fittings. 5-year rebuild or replace warranty.