Callan Double Cylinder Deadbolt Color:Satin Nickel (US15) The sealant cures to a

The sealant cures to a tough rubber to form a long-lasting acoustical seal

5/16-Inch X 4-1/2"

The tool construction is durable for longevity

water pressure

Includes a light and built-in night light

Callan Double Cylinder Deadbolt Color:Satin Nickel (US15) The sealant cures to aDouble Cylinder Function: Double cylinder deadbolts are keyed on both sides of the door and are only locked and unlocked via a key. Often times they are used on doors where glass is near the door that could be easily broken and the thumbturn on a standard single cylinder lock would be accessible. Caution: Double Cylinder locks can pose a safety hazard in times of emergency due to requiring a key to unlock. Please check local codes before installing.