GE ED37 Cool White Mogul Base (e-39) Metal Halide Light Bulb in the General Purpose Light Bulbs department at Lowes.com
Metal Halide Tubular E40 400w 10000h - Radiant Lighting
120W Super Bright Corn LED Light Bulb Fanless(400 Watt Metal Halide/HID/HPS Replacement) - E26/E39 Large Mogul Base Commercial Grade LED Bulb - 5000K Daylight 14400 Lumens for High Bay Area Lighting :
Sunlite MH400/U/MOG 400-Watt Metal Halide ED37 Bulb, Mogul Base, Clear : Amazon.ca: Tools & Home Improvement
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150 Watt LED High Bay Light Fixture - 120-277VAC - 400W Metal Halide Equivalent - 14,790 Lumens - YouTube
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Source Single ended high lumens 400w HPI-T metal halide lamp E40 with good price on m.alibaba.com
How many Lumens for a 400watt Metal Halide and what is the LED equivalent
LED 400W Metal Halide Replacement Corn Bulbs - 80 Watt, 5000K - Mogul Base; 100-277 volts