ANSI Grade 2; ADA Compliant; UL 3 Hour Fire Rated; Schlage SC 1, 5-Pin Keyway, Adjustable Backset 2 3/8 Inches Or 2 3/4 Inches; Thumb Turn And Escutcheon Are Fabricated From Forged Brass; Locked Or Unlocked By Key Outside Or Thumb Turn Inside; 5-Year Mechanical And Finish Warranty; Fabricated With Brass Cover And Steel Mechanism; Satin Chrome Finish.