400W HID or HPS Replacement. Heavy-gauge, die-cast aluminum housing. Corrosion resistant electrocoat bronze finish. Integral structural support plate for mounting arm ensures strength. Slim, state of the art, low profile design for minimum wind load resistance. Continuous silicone gasket surrounds lens for weather tight seal. High Output LED's with sealed polycarbonate lens optics. InstantON flicker-free Cold Start and Hot Re-Start.