Eden Bath offers a full line of designer drains and mounting rings in a variety of finishes including Brushed Nickel, Chrome, Matte Black and Oil Rubbed Bronze. This is a drain and mounting ring combo. The grid drain will work with most vessel sinks that feature a drain hole 1 1/2” in diameter or larger. Vessel sinks often use grid drains to avoid a potential overflow of water due to the faucet not being turned off. A grid drain is continuously open much like the drain in a shower stall. This drain does not have an overflow. The mounting ring will work with most rounded bottom vessel sinks, typically glass. The mounting ring has an outer diameter of 3 inches, an inner diameter of the hold of 1 5/8 inches, and a height of 0.375"