This fixture includes the Sylvania Powersense ballast that is dimmable with either a 0-10V control or a two-wire fluorescent line voltage dimmer. Twist lock sockets are also included. Lamar Lighting P Series Premium Strip with Electronic Ballast for F32 T8 Lamps features long and efficient ballast life, multi stage phosphate bonding process to inhibit rusting in damp locations, lighting grade baked on enamel finish, sturdy steel body, wiring components that are secured to the back housing allowing easy removal of the cover for easy maintenance, numerous knockouts and are designed for long term, heavy duty installation. All fixtures are IBEW union made.