Lock for interior doors. It has one latch bolt which can be deadlocked with either a key or a toilet thumbturn. Lock handing can easily be changed by pulling out the latchbolt and turning it 180° clockwise. The lock can be used with a lever handle only or with both a lever handle and a key or a toilet thumbturn. The lock fits into the same mortise as e.g. ASSA 404 and 404T. 2020 replaces the following old lock types: BODA 408-409-418-420-422-423-448-501-502-503 and ASSA 404 and 404T Striker plate: 0043, 0045, 0053, 0055, 0068, 0068B Fire resistance: Yes Mortise standard: SFS 5210, SS 81 73 82