Is this bulb a direct replacement for 400w HID or does the ballast on the existing fixture need to be bypassed? View answer
LED Hi Power Corn Bulbs > LED Lowbay PAR Bulb - HighBay Retrofit - Watt Selectable 100/120/150W - 21000 Max Lumens - 4000K Cool White - 120-277V - E39 Mogul Base - Ballast Bypass
