The Brinks Commercial light duty storeroom lever is designed for doors where the outside should remain locked at all times such as storage rooms or mechanical rooms. A key is used to retract the latch bolt and open the outside. When the key is removed, the outside will lock. The inside lever is unable to lock or unlock the outside lever. The storeroom lever comes with a 5-Pin SC1 cylinder and brass plug to provide added security and peace of mind. Equipped with tubular chassis for easier installation, this lever will fit wood or metal doors 1-3/8" to 2" thick.