(1) Install and maintain an operable dead bolt lock on each main swinging entry door of a dwelling unit. The dead bolt lock shall be installed in conformance with the manufacturer’s specifications and shall comply with applicable state and local codes including, but not limited to, those provisions relating to fire and life safety and
accessibility for the disabled. When in the locked position, the bolt shall extend a minimum of 13 / 16 of an inch in length beyond the strike edge of the door and protrude into the doorjamb.