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 Formed perforated cold- rolled steel construction.Cast aluminum end caps.Flush-mounted fasteners.Field adjustable housing.Locks in desired orientation.Aluminum cover fits over a standard 4" octagonal junction box.Fluorescent versions have 85% reflective, low-iridescent, specular aluminum reflector.Housing and mounting components painted to match, unless otherwise specified.Thermoset polyester powder coat finish standard.Integral electronic ballast.Thermally protected 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.