This Westinghouse Lighting White Glass Diffuser creates soft but broad illumination. The white glass is square with a beveled edge. This diffuser is suitable for a bathroom, bedroom, hallway, or other interior area. Use it to replace an existing diffuser for an instant makeover. The shallow design makes it ideal for low- and high-ceilinged rooms alike. Use this diffuser for a fixtures in your kitchen, living room, bathroom, or bedroom. It measures 12 in square by 1-1/2 in deep.