400 Watt BT37 EX39 4000K Cool White Open Rated 17000 Hours M135 M155 ANSI

The MP400W U UVP BT37 PS 4K is a high-performance 400-watt metal halide lamp engineered for safe operation in open fixtures. Featuring a BT37 bulb shape, EX39 mogul base, and a cool white 4000K color temperature, this lamp delivers powerful illumination with UV protection and a clear finish. Designed to comply with NEC safety standards, it includes arc tube containment to help mitigate risks in the event of rupture. Ideal for industrial and commercial applications requiring high-lumen output and open-fixture compatibility.

Specifications

• Electrical & Performance

  • Wattage: 400W

  • Life Hours: 17000

  • Color Temperature: 4000K Cool White

  • CRI: 70

  • ANSI Code: M135 M155

  • Start Method: Probe Start

• Physical Characteristics

  • Shape: BT37

  • Base: EX39 Mogul Extended

  • Finish: Clear

  • Enclosed Rated: No

  • Open Rated: Yes

  • Length MOL: 11.3 in / 287.02 mm

  • Diameter: 4.66 in / 118.36 mm

• Packaging

  • Package Quantity: 1 Lamp

  • Case Quantity: 6 Lamps

Applications:
Ideal for industrial facilities, gymnasiums, warehouses, and outdoor lighting where open rated fixtures are used. Excellent for environments requiring high-lumen performance with enhanced safety and UV protection.