This LED parking lot shoebox light is the most economical and energy efficient fixture on the market. At just 150 watts, this small and compact street light fixture uses Phillips LED chips and delivers 19,355 lumens, bright enough to replace 250 to 400 watt metal halide (MH) and high pressure sodium (HPS) fixtures. It comes pre-installed with either an adjustable knuckle mount slip-fitting bracket or an adjustable mount for round and square pole applications (select at checkout), giving users a variety of installation options for ease of use. The standard Type III optics provide back light control for large area and perimeter lighting applications, making this light perfect for parking lots/streets, schools, and parks. The 5000K daylight white light operates on a wide range of voltages from 100 to 277 volt and is 0-10V dimmable. The durable and rugged light is IP66 rated ensuring users a completely dust tight and waterproof shoebox light fixture. Plus, the AC380 cast aluminum alloy gives the fixture great heat dissipation capabilities allowing it to run uninterrupted for days.