Flush Universal Access Doors can be installed in either walls or ceilings. They are designed for installation in drywall, plaster, masonry, tile or any flush surface. The door panels feature rounded safety corners, which provide an architecturally pleasing appearance. The one-piece trim flange will not rack, sag or distort. The unique continuous concealed hinge will not bind or corrode, allowing the door to operate freely time and time again. For easy installation, the mounting frame is 1-1/4" deep, giving maximum clearance behind the door frame.