What is a Euro profile cylinder?
A Euro profile cylinder is a type of cylinder used with mortice locks and are frequently found on UPVC or composite multi-point door locks. There are various types, all using the same profile: double cylinder (opened by key from both sides, ideal for glazed doors); Euro cylinder with Thumbturn (key from outside, thumbturn inside, ideal for solid doors without large glass panels); single cylinder or half cylinder (lockable by key from the outside only, for store cupboards or garages etc.)
