For Use In: Drywall, plasterboard, wallboard, gypsum board, sheetrock, or gyprock) All assemblies clad in board 1/2″ (13 mm) or 5/8″ (16 mm) Wall or ceiling installation New construction or repairs Rough openings without abutting structures Maximum clearance with removable door leaf This product is not fire rated Benefits: Virtually invisible access opening (only 1/16″ /2 mm visible void) Clean, continuous surfaces without visible hardware Apply your choice of surface treatments directly to the door leaf Superior acoustics (maintains the STC of gypsum board assembly) Standard Features: Concealed mechanical touch-latch Moisture mold resistant GWB inlay Strong concealed aluminium frame and hardware Lift-out doors with safety cables Perimeter gasket (air & smoke tight)