Schlage
Heavy Duty One Sided Deadbolt, Schlage B664P
The Schlage B664P is a Grade 1 Commercial One Sided Deadbolt designed for high-level, heavy-duty applications. This unit features a one-sided key cylinder, meaning it cannot be unlocked from the interior.
This deadbolt is engineered for doors ranging from 1-5/8" to 2" thick and requires a 1-1/2" cross bore. It includes a metal dust box reinforcer and is UL listed for use with a 3-hour fire door application.
Available in six finishes, the B664P accommodates various needs including I Only Ordered One, Keyed Different, and Keyed Alike cylinder configurations.
Questions about this product? Call 954-776-5340 or send us a message below.









