Surface mounted access door – 24″ x 24″ this 24″w x 24″h access door is made of solid 16 gauge steel for long lasting duability and dependability. 25-1/4″w x 25-1/4″h frame. Rounded safety corners on door provides an architecturally pleasing appearance. Exposed continuous piano hinge allows the door panel to open to 175 degrees. Mounting holes in each corner of the frame allow for easy installation. Since there is no frame to extend into the wall or ceiling, it is ideal for access to odd size opening. White finish. 4 latches.