Special version on request e.g.: Bolt, single-throw with 22 mm exclusion, forend 20/24 x 280 x 3, composite latch (noise reduction) Function from the inside: The door has a lever handle or panic door fitting on the inside. When actuated, the latch and the pre-locked bolt are retracted. The door can be opened. Function from the outside: The door has a fixed knob on the outside. The latch and bolt can be operated with the key. After the door is pulled to, the latch prevents the door from being opened from the outside. The door can only be opened with the key. To open the door, the latch is retracted by key operation with the help of the key-operated latch. The door can also be locked and unlocked with the key.