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.Flush-mounted fasteners.Formed metal housingCast aluminum end caps.Field adjustable housing.Locks in desired orientation.95% reflective aluminum reflector.HID and tungsten halogen versions have tempered glass lens.Stem mount versions include (2) 5/8" steel mounting stems.Mounts to standard 4" octagonal junction boxAdditional mounting structure and hardware required (by others).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)