DAMAR 25311A MP400W/BU/UVP/4K 400W Metal Halide BT37 Open Rated 4000K EX39 Base

Identification & Application Damar 25311A MP400W/BU/UVP/4K 400W Metal Halide BT37 Open Rated 4000K EX39 Base. The Damar 25311A is a 400W metal halide lamp specified as MP400W/BU/UVP/4K in a BT37 bulb configuration with a 4000K color temperature and EX39 mogul base. It is designed for use in high intensity discharge luminaires rated for 400W metal halide operation. This lamp requires a compatible metal halide ballast as specified by the fixture manufacturer. It features ultraviolet prevention (UVP) and is intended for high bay, area, and industrial lighting applications requiring neutral white output in open rated fixtures. Verify ballast compatibility, fixture rating, and operating position before installation. The Damar 25311A MP400W/BU/UVP/4K 400W Metal Halide BT37 Open Rated 4000K EX39 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: 25311A MPN: MP400W/BU/UVP/4K Product Type: Metal Halide Lamp Installation Type: Screw-in lamp for HID luminaires with EX39 mogul sockets Electrical: 400W, requires compatible metal halide ballast Optical: 4000K, Typical (not manufacturer documented): 32000-40000 lm Base Type: EX39 Mogul Mechanical: BT37 bulb shape, universal burn position (BU), ultraviolet prevention (UVP) Lifecycle: average life 20,000 hr Documentation: See manufacturer spec sheet for additional details