* The M400/PS/BU lamp's ANSI Ballast Designation is M59. All metal halide lamps require a ballast to operate.

Premium Value M400/PS/BU metal halide lamps have exceptional quality and value at prices more competitive than name-brand products. Compare the 400W metal halide lamps specifications and enjoy the savings.

400 Watt Metal Halide BT37 M135 or M155 Mogul Base Light Bulb

• Manufacture | Premium Value
• Wattage | 400 Watts
• Order Code | 60021
• Model P/N | MS400/PS/BU
• ANSI Code | M135/O or M155/O
• Family | Metal Halide Lamps
• Rating | Open or Enclosed
• Finish | Clear
• Lumen Output | 44,000
• Color Kelvin | 4000K
• Lamp Shape | BT37
• Lamp Base | Mogul Screw Base (39mm) E39
• Burn Position | Base Up
• Average Life | 10,000 Hours
• Length (MOL) | 11.50"
• Width (Diameter) | 4.60"
• Case Qty | 12 (order a case and save!)
• Price Shown | Per Lamp
• Color Rendering CRI | 65