GE Lighting 42729 250W Metal Halide Mogul Bulb

The GE Lighting 42729 is a 250-watt Multi-Vapor Quartz Metal Halide bulb engineered for commercial, industrial, and security lighting applications. Built around an ED28 envelope with an E39 Mogul base, it slots into standard high-bay fixtures, wall packs, and pole-mounted luminaires commonly found in warehouses, parking lots, and manufacturing floors. The 4200K color temperature produces a neutral, daylight-balanced white light that supports accurate color rendering — a meaningful advantage in environments where visual clarity and worker safety are priorities.

One of this bulb's distinguishing features is its dimmable capability, which is relatively uncommon among metal halide lamps and allows facility managers to adjust output based on time of day or occupancy. With an average rated life of 6,000 hours, the GE 42729 is designed to minimize replacement frequency, particularly valuable in fixtures mounted at height where lamp changes involve lifts or scaffolding. As with all metal halide bulbs, a compatible ballast is required, and the lamp needs several minutes to reach full brightness after startup. The bulb contains mercury and should be recycled through appropriate hazardous waste channels at end of life.