The Yale Tubular Mortice Latch is a tubular latch for use on internal wooden doors with handles, where no locking is required. The latchbolt is withdrawn by a sprung handle and is not suitable for unsprung lever handles. It is suitable for both left and right handed doors. The dimension shown is the backset size. This latch has a standard security level and comes with a 2 year manufacturer's guarantee. This 3" tubular latch from Yale is suitable for wooden doors where no locking is required.