For use on doors 1-3/8 to 2-inch thick. Steel chassis with corrosion resistant coating, lock automatically unlocks when lever is turned. Latch size 1-1/8-inch x 2-1/4-inch with square corner faceplate, 1-inch housing diameter and 1/2-inch throw. Backset 2-3/4-inch, T Strike 1-1/8 x 2-3/4 x 3/32-inch, Schlage C Keyway with push button interior. UL Listed, 3-hour fire rated, 1-year limited warranty. Includes 2 nickel silver keys.