1980mm WH. This 16mm birmingham door bar is a flat security bar used to strengthen the hinged side of a door frame on inward opening doors. It can also be used to strengthen the frame on the locking part side if only mortice locks are fitted.. Dual purpose flat security bar to strengthen either side of the door if only mortice locks are fitted. Manufactured from high grade 5mm thick, flat steel with rounded edge and countersunk fixing holes. Polyester powder coated finish.