Perfect for use on entry doors needing an additional layer of security, this deadbolt locks/unlocks by key from the exterior or by a thumbturn from the interior. This deadbolt is backed by over a century of dedication to durability, strength and craftsmanship from Schlage®. Built with premium materials and certified to the highest industry standards, you can have peace-of-mind that this deadbolt helps protect what matters most. Trust your home to Schlage®.