Light Duty, Commercial, Tubular Grade 2, Passage Knob, US32D Satin Stainless Steel Finish, Complies With ANSI A156.2, Series 4000, Grade 2, 400,000 Cycles, Tubular Type Construction, Non-Handed, For Use On Interior Or Exterior Wood Or Metal Doors, 1-3/8" To 1-3/4" Thick, Latch, 1" x 2-1/4", Square Corner, 3/4" Housing Diameter, 1/2" Throw, Backset Adjustable For 2-3/8" To 2-3/4", Strike, 1-1/8" x 2-3/4" x 3/32" T Strike, Use 2-1/8" Diameter Hole For Knob & 1" Diameter Hole For Latch Bolt, Fits Standard 161 Door Prep, Schlage C Keyway, UL Listed, 3 Hour Fire Rated, 5 Year Warranty.