LED 400W Metal Halide Replacement Corn Bulbs - 80 Watt, 5000K - Mogul Base; 100-277 volts
Vegelumax 400W HPS Super Grow Light Bulb,High PAR Enhanced Red and Orange Spectrum,CCT 2100K,Ultra Bright 55,000 Lumens,E39 Base,1pack
400W Arc Lamp - Uvitron
InterLux Metal Halide 400W Lamp
400W Tubular Metal Halide Lamp (70006) – MY AP Lamps Ltd
iPower 400 Watt Vegetative Metal Halide MH Conversion Grow Light Bulb Lamp High PAR Enhanced Blue and Violet Spectrums CCT 6000K, 400W, glass - Walmart.com
PLATINUM M400/U lamp 400w MOGUL E39 base metal halide bulb - MH400 – BulbAmerica
Osram 281179 - High Pressure Sodium Light Bulb | LightBulbs.com
Ushio Conversion (Sodium to Halide) Lamp, 400W - GreenLightsDirect
HTI400/24 Lamp - 400w
MH400CU Metal Halide Lamp - AAMSCO Lighting
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
HPI-T-400W PLUS Metal Halide Lamp - AAMSCO Lighting