Quiet, Energy Star performance made affordable. Energy efficiency is more important than ever but it needn't make a major dent in your budget. NuTone delivers smart designs for easy installation, classic lines that complement any decor and the performance levels you need in a compact package. Fits in 2" x 6" ceiling construction. 4" UL Listed for use over bathtubs or showers when connected to a GFCI protected branch circuit. Housing dimension: 8 1/4" x 8" x 5-3/4".