Progress Lighting P3526-60 Satin Opal Cased Glass Twist-On Diffuser For Easy Relamping, White White Finish Opal etched glass Size: 10-1/8-Inch Width, 5-1/4-Inch Height Uses (1) 100-Watt medium base bulb Progress Lighting has over 5,000 lighting fixtures offered in our catalog, the largest single source for residential and commercial lighting