For use on doors 1-3/8 to 2-inch thick. Tubular steel chassis with corrosion resistant coating. Latch size 1-1/8 x 2-1/4-inch with square corner faceplate, 1-inch housing diameter and 1/2-inch throw. Adjustable backset 2-3/4 or 2-3/8-inch, T-Strike 1-1/8 x 2-3/4 x 3/32-inch. Use 2-1/8-inch diameter hole for lever and 1-inch diameter hole for latch bolt. UL Listed, 3-hour fire rated, Schlage C keyway, 1-year limited warranty. Includes 2 nickel silver keys.