Use this LED retrofit lamp to easily convert metal-halide (MH) and other high-intensity discharge (HID) fixtures into super-bright, energy-efficient LED fixtures. It's designed for high-/low-bay lights, warehouse lighting, parking lot lights, canopy lights, wall pack lights, retail lighting, gym lighting, and parking garage lighting. This powerful HID LED retrofit uses just 100 watts of power to emit 12,000 lumens of cool or natural white light and is a replacement for 400-watt MH bulbs. With a life expectancy that's more than twice as long as MH bulbs, the LED light reduces costly repairs, disposal fees, and the need for replacements. The LED retrofit lamp has an aluminum LED-cooling heat sink and shatterproof polycarbonate lens. An E39/E40 mogul screw base allows for easy installation in MH fixtures (ballast can be removed or bypassed), and the LED retrofit lamp operates within a wide 100-277 VAC range.