... :1, 0.45cm thickness Steel Back Side ,0.32 Mirro Aluminum Reflector, Antistatic plastic painting.2, Have 2*18w/36w, 3*18w ... /36w/58w.4, Available Material: Mirro Alumimum or Sub-bright Aluminum.5, Available Grid Shape: I Type or V Type.6 ... .8, Available Ballast: Electric or Inductive Ballast9, IP: IP20 Recessed reflector grid lamp fixture