Lido leversets are reversible for left or right hand. Packaged with a 2 3/8" backset square face plain latch or adjustable latch (AL), interchangeable for 2 3/8" or 2 3/4" backsets and square face plain latch. For bedroom and bathroom doors. Turn button on interior lever. Turning button locks both levers. Lock may be opened by emergency entry key in exterior lever. Lifetime mechanical warranty. 5 year finish warranty.