Acudor Z91818SCWH UF-5500 Metal Access Door 18 x 18, 20" Height Easy Provides access to shutoff valves, electrical junctures, cable raceways and a variety of other needs to install in most flat surfaces, including drywall, plaster, tile and masonry Easy to install in most flat surfaces, including drywall, plaster, tile and masonry 1-Piece trim flange resists sagging and distorting Design of the hidden hinge helps prevent binding Rounded corners for safety