Delta BreezGreenBuilder GBR50L 50 CFM Exhaust Bath Fan/CFL Light Virtually Silent at &lt;0.3 Sones for quiet comfort Significantly improve indoor air quality in spaces up to 50 square feet Innovative brushless DC motor technology to last 2-1/2x longer than traditional AC motor fans ENERGY STAR qualified for energy and cost savings Housing Dimensions: 8.25 x 8 x 5.75 inches Grille Dimensions: 11 x 11 inches