Ultra slim design. Extruded aluminum housing with a white finish. Available in three lengths: 8.9 (3 watts), 11.8 (5 watts), 19.7 (8 watts), 39.3 (16 watts). Link up to 32 watts per run on one power source. Natural white (4000k) or warm white (3000k) are available. Hard wire kit or plug in power supply units are sold separately. Regular TRIAC dimmer can be used for hard wire installations. Optional dimming controller is available for plug in power supply installations. cULus approved.