Ancona Julia Entrance Door Knob with Lock, Brushed Nickel Finish Quality brushed nickel finishes for lasting beauty Rugged all-metal chassis for security with concealed screw mount Fully reversible and can be re-keyed, turn button release Easy installation instructions provided, designed to fit most common residential door preps Door thickness range: 1-3/8 in. to 1-3/4 in. standard; Backset: Universal latch standard, fits either 2-3/8 in. or 2-3/4 in. backsets