Built to last Adams Rite deadlatch that will interface with your new narrow-stile door lock.  Rock-solid construction, and easy to install, the Adams Rite products have been analogous with quality for decades.  This auto-locking deadlatch interfaces with the .  If you do not currently have a paddle, be sure to order one.  Your keyless lock, this deadlatch, and the interior paddle are the three necessary components to complete your access control system.