Nothing is tougher! L400 Series locks are designed for use as primary locks where no latching is required, such as restrooms and small doors to utility spaces. They also offer optimum security when used as auxiliary locks in other applications. Schlage L Series Extra Heavy Duty Mortise Locks are built to withstand the rigors of daily use without fail.
ANSI Function E06091 – Deadbolt thrown or retracted by key from outside. Inside thumbturn cylinder retracts deadbolt, but cannot project it.