Access Door Elmdor DW Drywall Access 20" x 30" Rough Opening Size: 20 &frac12;" wide x 30 &frac12;" high Material: 16 gauge galvanneal steel, Finish: Prime coat suitable for painting Lock / latch: 5 x Screwdriver Operated Cam Latches Hinge: Continuous piano hinge Flange: 1" flange