Under-cabinet LED task lighting in an 18-inch 5W bar at 5000K daylight, for kitchen counters, workbenches and any surface that needs light from above the work rather than across the room.
Length, wattage and colour temperature are published per SKU. Under-cabinet lighting is bought to fit a cabinet run, so the physical length carries the decision before the output does.
The line is a single format today. It sits with the decorative and residential fixtures rather than the commercial strip lighting, because the buyer is specifying a kitchen rather than a cove.