Powerful LED Retrofit — Slash Energy Costs Without Replacing Your Fixtures The Light Efficient Design 90W Open Rated High Bay Retrofit (LED-8136M40D) is the smart, cost-effective upgrade for facilities still running outdated 250W HID lighting. Simply swap out your existing mogul EX39 bulb and instantly benefit from modern LED efficiency — no fixture replacement required, no electrician needed for rewiring. Designed for Demanding Commercial & Industrial Environments Rated for open fixtures, this high bay retrofit is built tough for warehouses, manufacturing floors, gymnasiums, retail spaces, and storage facilities. The 4000K neutral white colour temperature delivers crisp, clean light that enhances visibility and worker productivity — without the harsh blue tones of cool white or the warmth of incandescent. Wide voltage compatibility (120–277V) makes installation seamless across virtually any North American commercial electrical system. Why Choose This Retrofit at Lumibox.ca? Replacing a 250W HID with this 90W LED unit means cutting your lighting energy consumption by over 60% — a significant reduction in operating costs that pays for itself quickly. LED technology also eliminates the warm-up time associated with metal halide and HPS lamps, providing instant full brightness the moment you flip the switch. With Light Efficient Design's proven engineering and Lumibox's reliable Canadian distribution, you get a premium product backed by trusted expertise. At , the LED-8136M40D is a high-value investment for any facility looking to modernize its lighting infrastructure efficiently and affordably.