DAMAR 21857C M150W/U/BT28/PS/4K 150W Metal Halide BT28 4000K E39 Base

Identification & Application Damar 21857C M150W/U/BT28/PS/4K 150W Metal Halide BT28 4000K E39 Base. The Damar 21857C is a 150W metal halide lamp specified as M150W/U/BT28/PS/4K in a BT28 bulb configuration with a 4000K color temperature and E39 mogul base. It is designed for use in high intensity discharge luminaires rated for 150W metal halide operation. This lamp requires a compatible metal halide ballast as specified by the fixture manufacturer. It is intended for area, high bay, and industrial lighting applications requiring neutral white output. Verify ballast compatibility, fixture rating, and operating position before installation. The Damar 21857C M150W/U/BT28/PS/4K 150W Metal Halide BT28 4000K E39 Base is designed for commercial, industrial, residential, maintenance, and specification-grade lighting applications requiring compatible installation conditions and documented manufacturer reference information. The product configuration supports use where the listed electrical, optical, mechanical, mounting, and control characteristics match fixture, replacement, and project requirements. Technical Performance Specifications Brand: Damar SKU/MPN: 21857C MPN: M150W/U/BT28/PS/4K Product Type: Metal Halide Lamp Installation Type: Screw-in lamp for HID luminaires with E39 mogul sockets Electrical: 150W, requires compatible metal halide ballast Optical: 4000K, Typical (not manufacturer documented): 12000-16000 lm Base Type: E39 Mogul Mechanical: BT28 bulb shape, protected arc tube (PS), universal burn position (U) Lifecycle: average life 15,000 hr Documentation: See manufacturer spec sheet for additional details