With its’ use of minimal hardware, Serenity offers a frameless look that creates a floating appearance within the enclosure. The Serenity is designed with special roller bearings that allow for a quite, easy opening and closing of the shower door. This unique roller system operates above the header bar that spans the top of the sliding shower enclosure. The beauty of the Serenity Slider is that it offers simplicity with no vertical lines of metal and no frames! Just beautiful, thick, clear glass.