Compact housing with foldable mounting brackets for NO CUT and versatile installation Powerful enough for rooms up to 45 sq. ft. Brighter white grilles blend in to match most common ceiling paint Corrosion resistant galvanized steel housing stands up to moisture Permanently lubricated AC motor engineered for continuous operation Double strength mounting flanges with keyhole slots Quiet polymeric damper prevents cold backdrafts with no metallic clatter No electrical knockout to remove Removable wiring cover – make connections away from tight corners U.L. listed for tub or shower enclosure with GFCI branch wiring Mfg #688E