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M400/U/ED28 Metal Halide Lamp – 400 Watt, Universal Burn

M400/U/ED28 Metal Halide Lamp – 400 Watt, Universal Burn

Key Features & Benefits

  • 400W Metal Halide (MH) HID lamp

  • Universal burning position (U)

  • Compact ED28 bulb shape

  • High lumen output for large areas

  • Long rated life to reduce maintenance

  • Compatible with ANSI M400/U ballasts

  • Requires enclosed fixtures where specified

Common Applications

  • Industrial and warehouse high bays

  • Parking lots and parking garages

  • Roadway and area lighting

  • Security and perimeter lighting

  • Manufacturing and utility facilities

Specifications

  • Lamp Type: Metal Halide (MH)

  • Wattage: 400W

  • Bulb Shape: ED28

  • Burn Position: Universal

  • ANSI Code: M400/U

  • Base: Mogul (E39) (typical)

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Description

The M400/U/ED28 metal halide lamp is a high-output HID light source designed for commercial, industrial, and outdoor lighting applications requiring strong, reliable illumination. Operating at 400 watts with a universal burning position (U), this lamp delivers consistent performance and flexibility in a wide range of fixtures.

Featuring a compact ED28 bulb shape, the M400/U/ED28 allows installation in luminaires with tighter space constraints while still providing the high lumen output expected from a 400W metal halide lamp. When paired with the proper ballast and enclosed fixture, it offers dependable light output and long service life.

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