As the industry leader- Kwikset has provided trusted security for over 60 years and has become synonymous with security- peace of mind- style and innovation. The largest-selling deadbolt in America- the 600 series provides tough- effective protection at an affordable price. This double cylinder deadbolt is operated by a key on both sides.For use on exterior doors where keyed entry and security is needed.Double cylinder deadbolt operates by two keyed points- outside and inside.Features an adjustable latch to fit all standard door preparations.ANSI/BHMA grade 3 security.Add to a keyed knob or lever (not included) for additional security.Easily installs in minutes with just a screwdriver.ADA Compliant: No.Assembled Depth: 1.0625".Assembled Height: 2.43".Assembled Width: 2.43".Backset size: Adjustable.Commercial / Residential: Residential.Commercial Hardware Type: Cylinders.Deadbolt bore hole diameter: 1.0".Deadbolt cross bore diameter: 2.125".Deadbolt strike: Round corner.Deadbolt strike height: 2.25".Deadbolt strike width: 1".Deadbolt throw length: 1".Deadbolt trim ring diameter: 3.0".Door Handing: Universal/Reversible.Door Locks and Knobs Product Type: Deadbolts.Electronic: No.Finish: Venetian Bronze.Interior/Exterior: Exterior.Lock Type: Dbl Cyl Deadbolt.Material: Metal.Projection: 1.0625".Security/ANSI Grade: ANSI Grade III (Good).Total number of keys included: 2.