P4D High Performance Parabolic, Size Type: 2x4, Lamp Type: 4 foot, T8: 32 watt fluorescent, Ceiling Type: Grid, Louver Finish: matte anodized low iridescent semi-specular, Louver Type: 2 cells crosswise x 6 cells lenghwise, Air Function: Static-No Air Handling, Ballast Type: (2) electronic instant start T8, Voltage Rating: 120-277 VAC.