Light Efficient Design LED-8024M57 LED-8024M57-A LED Retrofit, 5700 Kelvins Ballast Bypass Compact design delivers broad, even light distribution when retrofitted into HID post top fixtures. Easy to install, reliable retrofits provide an energy savings up to 80%. Rotatable E39 Mogul Base insures that light output is directed to where it is needed. Safety rated and heat tested within fully enclosed fixtures from -40 to +122F ambient temperatures. 45W LED replaces Metal Halide (MH) or High Pressure Sodium (MPS) High-intensity discharge (HID) Lamps up to 250W. Advanced Active Cooling technology delivers consistently higher LED efficacy and life when placed within enclosed fixtures. Integrated 6kA surge.