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 Enclosed magnetic ballast.Formed perforated cold- rolled steel construction.Cast aluminum end caps.Flush-mounted fasteners.Locks in desired orientation.Field adjustable housing.Aluminum cover fits over a standard 4" octagonal junction box.Cantilever arm mount utilizes yoke bracket with 1" steel arm.Housing and mounting components painted to match, unless otherwise specified.Thermoset polyester powder coat finish standard.Remote ballast in HID versions.Thermally protected ballast.UL listed (US and Canada) for damp location. (Not recommended for exterior use)95% reflective aluminum reflector.HID and tungsten halogen versions have tempered glass lens.