Låshus
Scandinavian Standard
This is the most common lock case found in interior doors in private residences in Sweden, such as the ASSA 2014. The c/c measurement is 30 mm, and it can be locked with either a key or a bathroom thumbturn.
Modular lock case
Lock cases used in public environments, like the ASSA 565 or ASSA 310. The c/c measurement is 30 mm, and the handle is typically positioned below the lock. It can be locked with either a cylinder lock or a bathroom thumbturn.
European Standard
With the European standard, the c/c measurement is 38 mm, and the screws are positioned horizontally for both the handle and the bathroom thumbturn.