Field adjustability means 9 SKUs in 1, all sizes of the C-SWISH offer selectable color temperature and wattage. The housing of the C-SWISH is composed of sustainable, biocomposite resin that.s manufactured with waste seashells and recycled plastic. Perfect for use in healthcare facilities, office spaces, and classrooms where lighting preferences vary from space to space. The Rab Lighting C-SWISH2X4 features include 2 feet x 4 feet, formulated for high durability and long-lasting white color, 36W/30W/20W field-adjustable light output, selectable 3500K, 4000K, 5000K color temperature, recessed ceiling mounting, and 0-10V dimming standard.