Smooth interior door, FLAT model. 53 mm thick sheet, with a 43 mm thick compact fiber interior, soundproof up to 22 dB, a 5 mm thick board on each side. Perimeter interior frame of 33x40 mm thick fibers. Includes Igle wide blade hinges and Tesa 134 U lock, trim housed in the strike plate of the swing. Robodue levers. Covering of the pre-frame using jamb and cap without nailing, CARRÉ system. Perimeter rubber gasket. 16mm side and top plackets with straight top delivery.