Design House 750489 Egg 2-Way Latch Passage Door Knob, Adjustable Backset, Satin Nickel Finish Finished in Satin Nickel and designed for left or right hand doors ANSI grade-3 certified for residential security; UL listed for use on fire doors (3 hours) Fits 2-3/4-inch and 2-3/8-Inch backsets; fits 1-3/8-Inch and 1-3/4-inch thick doors Passage lock; no locking function; the knobs or levers freely operate the latch Comes with a limited lifetime mechanical warranty and a 5-year finish warranty