Rectilinear shaped light bar with white acrylic shade and pressure formed frame. Provides task and ambient light. May be mounted vertically or horizontally. Includes 54 watt high output T5 linear fluorescent lamp and electronic ballast. Dimmable fluorescent version requires a dimmer that is designed to work with a dimmable ballast. Dimmable fluorescent units ship standard with a two wire Advance Mark X dimming ballast (dedicated 120 or 277v). Dimmer and ballast compatibility to be field verified and all dimmers supplied by others. Consult the factory for custom ballast availability and pricing.