Ushio UMH-1000/U/BT37 1000W Metal Halide Bulb

The Ushio UMH-1000/U/BT37 is a 1000-watt metal halide lamp engineered for high-output commercial and industrial lighting applications. With a color temperature of 4000K, it produces a neutral white light that supports accurate color perception — an important quality in warehouses, manufacturing floors, retail spaces, and outdoor area lighting. The universal burn position rating gives installers full flexibility, as the bulb performs reliably whether mounted vertically, horizontally, or at any angle in between.

Built around the BT37 blown tubular envelope and fitted with an E39 Mogul Screw base, this bulb is designed as a direct replacement in standard high-wattage fixtures. As with all metal halide lamps, a compatible ballast is required, and operators should expect a brief warm-up period before the bulb reaches full output. While metal halide technology is gradually being supplemented by LED in many contexts, it remains a proven and cost-effective solution for facilities that need intense, broad-coverage illumination from existing HID infrastructure.