HALCO LIGHTING TECHNOLOGIES 400-Watt Equivalent 90-Watt Corn Cob ED37 HID LED High Bay Bypass Light Bulb Mog 120-Volt - 277-Volt in Cool White HID90/840/EX39/LED 84113 - The Home Depot
400Watt Metal Halide Replacement E39 100W LED Retrofit Corn Bulb 5000K 100-277V | eBay
LED 100W Mercury Vapor Retrofit Corn Bulbs - 22 Watt, 5000K - Medium Base; 100-277 volts
LED Retrofit Bulb - 400W Equal - Mogul Base - Keystone KT-LED110HID-H-EX39-850-D /G3 | CityLightsUSA.com