The union 5 lever mortice rollerbolt sash lock c series 80mm are suitable for use on timber doors hinged on the left or right and are also suitable for use on doors up to 50mm thick the lock has a deadbolt operation and is locked or unlocked by key from either side with the latch bolt being withdrawn by a lever handle from either sideit has force resistant anti drill anti pick and anti saw security features and is available with square forend and striking plate with a 14mm bolt throw they