Our most popular front door locking system is the key-operated or townhouse style without an exterior handle to replicate the traditional look of a mortice lock and deadbolt. The handle operated locking system with exterior handle is commonly used on back doors and modern front doors. There is no difference in terms of security between the two, both locking systems are PAS24:2016 certified and Secured by Design approved. They operate a 3-point locking mechanism that bolts into the door frame and feature a 3-star Neighbourhood Watch approved door cylinder lock.