The Sylvania M400/U is a 400W Metalarc quartz metal halide lamp designed for high-efficacy, long-life white light output in commercial and industrial fixtures. Featuring an ED37 bulb shape and an E39 mogul screw base, this metal halide lamp delivers 32,000 lumens of crisp 4000K cool white illumination with a CRI of 65 for well-balanced color rendering. Rated for 15,000 life hours, it operates in a universal burn position, giving installers flexibility to mount the lamp in any orientation within compatible fixtures.

This metal halide bulb is used in industrial, commercial, retail, sports, street, greenhouse, and area lighting applications where reliable high-output white light is required. Its ANSI M59 designation ensures compatibility with standard 400W probe-start metal halide ballasts, making it a straightforward replacement for aging HID lamps in warehouses, parking lots, gymnasiums, security installations, and roadway luminaires. Metal halide technology offers significantly higher efficacy than mercury vapor and incandescent sources and better color rendering than high pressure sodium, making the M400/U a dependable choice for facilities seeking consistent white light performance from a proven HID platform.

• 400W metal halide lamp with ED37 bulb shape and E39 mogul screw base for standard HID fixture compatibility
• 32,000 lumens of 4000K cool white light with 65 CRI for balanced color rendering in commercial spaces
• Rated 15,000 life hours with universal burn position for flexible mounting in any orientation
• ANSI M59 code ensures compatibility with standard 400W probe-start metal halide ballasts
• Ideal for industrial, warehouse, retail, sports, street, security, and area lighting applications
• Sylvania Metalarc quartz construction delivers proven high-efficacy performance and long service life

Tags: M400/U, Sylvania, Metal Halide, 64036