Door Lever-Sets Yale door lever handle-sets offer both convenience and comfort when opening a door. Available in a set of two sided lever handles and a latch lock, Yale lever handle-sets are economical and easy to install. Different security levels support a large variety of applications. These door lever handles can be used in internal and front doors in residential or light duty commercial areas usually pairing with a Yale deadbolt. Medium Duty Lever Handle-sets Yale medium duty tubular lever handle-sets are suitable for residential, light duty commercial or institutional use. They meet ANSI standard and provide quality security.