Acudor Access Door UF-5000 18" x 24" Premium Universal Flush Door Rough Opening Size=18 &frac38;" wide x 24 &frac38;" high";" Material: 16 gauge cold rolled steel door, 18 gauge mounting frame, Finish: 5 stage iron phosphate preparation with prime coat of White alkyd baked-on enamel Lock / latch: Stainless Steel Screwdriver Operated Cam Latch Hinge: Continuous, Concealed Flange: One-piece outer flange welded to mounting frame