Sylvania 64445 MS400/HOR - 400W - BT37 - Position Oriented Mogul Base - Standard Start Metal Halide - 6ct
LED Corn Bulb - 400W Equal - Mogul Base - RAB HID-100-EX39-850-BYP-PT-G2 | CityLightsUSA.com
105 Watt Stubby LED Corn Bulb, Replaces 450 Watt HID, 15,750 Lumens, DLC Listed, ETL Listed, 50,000 Hours, 10 Year Warranty - LED Global Supply
Simply Conserve Corn Cob 16800 Lumen EX39 Base 400-Watt EQ ED17 Daylight EX39 LED Light Bulb (2-Pack) in the General Purpose Light Bulbs department at Lowes.com
Sylvania 400 Watt Clear ED28 Cool White Metal Halide Bulb | M400/U/ED28 | Bulbs.com
MH400/U/ED28 400 Watt M59/E Metal Halide Bulb – Green Electrical Supply
Amazon.com : cdmall Full Spectrum LED Grow Light 400W for Indoor Crops Growing, AlphaPar New Tech LED Grow Lamp Board for Indoor Hydroponic Grow Veg and Flowers (APQ 400W) : Patio, Lawn
Feit Electric 400-Watt ED28 Shape Clear Metal Halide High Intensity Discharge E39 Mogul Base HID Light Bulb (1-Bulb) MH400/U/ED28/HDRP - The Home Depot