Kwikset 785-S.Strkp 780 Double Cylinder Keyed Entry Deadbolt - BrassDescription: Double Cylinder: The deadbolt is thrown and retracted by a key from either side. As you will not be able to unlock this from the inside without a key please check your local fire code to ensure this is allowed before purchasing. Features: Tested to exceed ANSI BHMA Grade 2 security requirements Constructed of solid brass for durability and dependability Installs easily with all necessary mounting hardware included Covered by Kwikset s