Description Echo Velocity is a unique asymmetric T5 and T5HO luminaire that combines an architecturally pleasing form with a palette of optical options. Features Thermoset polyester powder coat finish standard.Thermally protected ballast.Internal blade louver (IBL) and dust cover lens (DCL) accessories cannot be used in the same luminaire.Extruded aluminum housing.Cast aluminum end caps.Stem mount versions include (2) 5/8" steel mounting stems.Stainless steel external fasteners.Field adjustable housing.Locks in desired orientation.95% reflective aluminum reflector.Housing and mounting components painted to match, unless otherwise specified.Integral electronic ballast.Ballasts minimum start temperature is 0° F.Class "A" sound rated ballast.UL listed (US and Canada) for damp location. (Not recommended for exterior use)Meets NEC 410.73 double-ended, fluorescent lamp ballast disconnect requirements.