400W Replacement LED Corn Bulb 400W Metal Halide Retrofit - 80 Watt, 4000K - Mogul Base; 100-277 volts
Digilux Digital High Pressure Sodium (HPS) Lamp, 400W, 2000K
400W Arc Lamp - Uvitron
Philips Lighting MH400/U :: Metal Halide Lamp, 400W, ED37 :: PLATT ELECTRIC SUPPLY
400W Protected Metal Halide Lamp ED37 M59/O
MH400CU Metal Halide Lamp - AAMSCO Lighting
Amazon.com: Vegelumax 400W HPS Super Grow Light Bulb,High PAR Enhanced Red and Orange Spectrum,CCT 2100K,Ultra Bright 55,000 Lumens,E39 Base,1pack : Everything Else
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
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
Eye Hortilux Blue Daylight Super MH Lamp - 400W Horizontal direct from Growers House
Ushio UMH-400/U, ED28 Metal Halide Lamp (400W/4000K/ED28)