Progress Lighting PV004-30 70 CFM Bath Fan with Sound Level Rating at 3.5 Sones and Light Included, Textured White Textured White Finish 70 cfm, 3.5 Sone rating; 4-Inch duct adapter 12-1/2-Inch Width x 6-1/4-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