This is the mechanism inside the door that is operated by the handle;Most likely to the problem when a lock fails;Centre case can be re-attached to the old locking strip;More cost effective than replacing the whole multi point lock;Most important measurements are 35mm/45mm/55mm Backset and 92mm PZ - We stock all variations

• Fullex SL16 Door Lock Centre Case/ Gearbox/ Mechanism - 35mm Split Spindle - Door Lock Centre Case/ Gearbox/ Mechanism 35mm Backset / 68 PZ

Fullex SL16 Door Lock Centre Case/ Gearbox/ Mechanism - 35mm Split Spindle - Door Lock Centre Case/ Gearbox/ Mechanism 35mm Backset / 68 PZFullex