110 CFM fan speed circulates air and helps reduce moisture in the bathroom; Quiet, efficient performance at 1.0 Sones; Foldaway mounting ears allow for easy installation in both new construction and room-side replacement; EzDuct Connector allows room side installation with no attic access required; TrueSeal Damper technology forms a tighter seal to reduce back drafts; Attractive grille styling; ENERGY STAR certified