A deep profile 2X4 recessed linear T8HO fluorescent lens luminaire, lay-in grid. Features heavy-duty construction and a complete menu of available diffusing media, lamping choices, and ballast options. DEMANDflex ballast high efficiency program start with the flexibility to be tuned at the circuit level to fixed power levels during installation. Fully compatible with occupancy sensors and exceed the CEE requirements for high efficiency program start ballasts.