Yale D series deadbolts are the ideal choice for a wide variety of commercial applications where consistent quality, ease of use and installation are required. The D100 series is certified to ANSI/BHMA Grade 1 standards. 1" throw solid steel deadbolt with hardened, free spinning steel pin insert. Non-handed functions are easily field reversible. Several SFIC functions feature concealed interior screws that only the control key can access. Can be installed on doors prepared to ANSI/BHMA A156.115 specifications using a simple bored-hole installation for square or beveled doors, opening in or out. D series deadbolts, when used in conjunction with the primary latching device, are UL - cUL listed for use with classified steel covered composite or hollow metal doors rated up to and including 3 hours; wood and plastic covered composite doors rated up to and including 1-1/2 hours; and wood core doors rated for 20 minutes.