The fixed or adjustable white opal cover encloses the ultra bright LEDs, provides for an even glow exiting the fixture and eliminates unwanted "point of light" visibility. The SG-LED uses the same direct- and cable-connectors making the plug and play installation quick and easy as well as making retrofitting/upgrading from fluorescent simple. Under Cabinet Fixture This is a line voltage fixture that can be connected for runs of up to 80 linear feet. Our LEDs have an average rated life of 50,000 hours or 17 years if lit 8 hours/day.