Universal Hardware's Commercial 2-3/4 in. Heavy Duty Passage Lever in Satin Chrome is constructed with a robust cylindrical locking mechanism. This lock is designed for heavy use doors. It is extremely durable mechanically, as well having a durable finish. This lock is as versatile as it is durable and can fit residential and commercial doors of multiple thicknesses. The passage function works great for doors that never need to be locked.