US32D Satin Stainless Steel Finish; Tubular Grade 2; Complies With ANSI A156.2. 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