The S49390R1 18W LED HID Replacement Lamp is a high-performance LED lighting solution designed to replace traditional HID lamps while significantly reducing energy consumption and maintenance costs. Featuring an E26 medium base, universal 120-277V operation, and Type B ballast-bypass installation, this LED lamp delivers bright 5000K natural daylight illumination for commercial, industrial, and outdoor lighting applications. Its durable aluminum and polycarbonate construction, built-in surge protection, and enclosed-fixture rating make it a dependable choice for demanding environments.