Philips 400W Grow Light Bulb Metal Halide Conversion | 901551

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$74.95  $62.67
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Conversion Lamp 400 Watt High Pressure Sodium Growing

This 400 watt metal halide conversion bulb introduces flexibility to growers who want to use metal halide bulbs on HPS ballasts. Philips designed this innovative grow bulb for growers on a tight budget that want to provide a healthy supply of both HPS and MH light.

MH Lamp Features:
  • Manufacturer: Philips
  • Model: CDM400S51/HOR/4K/ALTO
  • For Use With HPS Ballasts
  • Wattage: 400W
  • Lumens: 34,800
  • Color Temp: 4000K
  • CRI: 92
  • Finish: Clear
  • Base: Mogul E39
  • ANSI Code: S51
  • Burn Position: Horizontal
  • Bulb Life: 15,000 hrs
  • Price Shown: Per Lamp
  • Case Qty: 12
  • Lamp Shape: ED-18
  • Lamp Dimensions: 9.75 x 2.25 (in.)
  • UPC Bar Code: 046677146504

What are the benefits of conversion bulbs?

With our 400 watt conversion bulbs give you the option of using either high-pressure sodium or metal halide from a single source. Allowing your plants to receive both blue and red-spectrum light, they will grow healthier, and flower aggressively.

With this high-lumen grow lamp, you will be able to provide the most nutritious 400 watt supply of light to your home garden, which will ultimately pay off with its yield.

For questions regarding our conversion bulbs or Grow Light products, please call toll free to 888.606.2149. Our customer service center will gladly address all of your questions and concerns.

To view more grow lamps click here.




  • Model: 901551
  • Manufactured by: Philips