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The Philips 313585 is a switch-start metal halide HID lamp rated at up to 100 lumens per watt, designed for high-efficiency, long-life general and commercial lighting applications. Sold as a 12-pack under the MH175UM designation, this compact lamp delivers crisp, high-quality white light suited to demanding commercial and industrial environments. It operates on a standard switch-start ballast circuit and is built for consistent output over extended service intervals. Licensed electricians and lighting contractors typically specify this lamp for new installations and retrofits in high-bay and low-bay fixtures.
This lamp is well matched to industrial and retail facilities where high-bay and low-bay luminaires are common, including warehouses, manufacturing floors, big-box retail interiors, and parking lot area lighting. The compact form factor fits a range of standard metal halide fixtures without modification. Its high efficacy and long rated life make it a practical choice for facilities managers and electrical contractors looking to reduce relamping frequency in hard-to-reach overhead installations.
Designed for use in standard switch-start metal halide HID fixtures commonly installed in industrial high-bay and low-bay applications, as well as outdoor parking lot luminaires. Verify ballast type and wattage rating before installation.
Metal halide lamps must be installed by a qualified electrician in accordance with applicable NEC requirements and fixture manufacturer instructions. Always de-energize the circuit and allow the existing lamp to cool completely before handling or replacement. HID lamps operate under high pressure and should never be operated in fixtures that are open or in orientations not approved for the specific lamp type. Wear appropriate eye and hand protection during lamp handling and disposal.
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