Description Echo Round 9.0 is designed to address larger, high-ceiling spaces such as atriums, gymnasiums, libraries, natatoriums and open offices. Its vast lamping range and premium light control provides sufficient and visually uniform illumination to surfaces. Round's proportionate size and basic shape integrates seamlessly into a space. Features Extruded aluminum housing.Cast aluminum end caps.Flush-mounted fasteners.Field adjustable housing.Locks in desired orientation.Aluminum cover fits over a standard 4" octagonal junction box.95% reflective aluminum reflector.Housing and mounting components painted to match, unless otherwise specified.Thermoset polyester powder coat finish standard.Integral open core and coil magnetic ballast in HID versions.Thermally protected ballast.Class "C" sound rated ballast.UL listed (US and Canada) for damp location. (Not recommended for exterior use)Cast aluminum canopies.Horizontal stem versions include 1 1/2" steel stems and square canopies.