Schlage Heavy Duty Double Deadbolt
Grade 1 auxiliary lock, UL listed for 3-hour fire, Double cylinder deadbolt
Deadbolt has 1 1/8 x 2 1/4 square faceplate. Bolt has 1" throw.
Backset comes in 2 3/4" or 2 3/8".
Door locked or unlocked with key from outside and / or key inside.
Double cylinder locks on residences and any door which is used for egress are a life safety hazard, their use is not recommended. Installation should be in accordance with existing codes only.