The 3-Light 2 ft. x 4 ft. White Multi-Volt T8 Fluorescent Parabolic Troffer provides general illumination in open area applications like offices where visual comfort is important. The parabolic louvers direct light downward to reduce glare on computer screens and at the ceiling. This contractor-friendly Troffer is also easy to install in grid ceiling applications. Size: 25.4 In. Material: Silver.