Manufacturer Yale ASSA ABLOY Model CRxCN8891FL-12V-626-2153 Lock Functions 8891FL – Power off outside lever locked, Power on outside lever active, Auxiliary latch deadlocks latchbolt, Inside lever always free, Mechanical key override by outside when locked. Door Thickness Standard for 1-3/4″ thick doors. Backset 2-3/4″ only Case Wrought steel, zinc dichromated Handing Handed (Field Reversible) Keying/Keyways Less Standard 1-1/8″ Mortise Cylinder 2153 Latchbolt 3/4″ throw, stainless steel two-piece anti-friction camming action Faceplates/Armor Fronts 8″ x 1-1/4″ Exposed Trim CR Lever Handle: Cast Escutcheons CN Escutcheon: Cast Mode of Operation Fail Secure Voltage .5A at 12VDC U.L. Listed UL Listed for use on fire doors having a rating up to and including 3 hours and for use on 20 minute wood doors. ANSI/BHMA Certified ANSI/BHMA A156.13 Grade 1 Warranty 2 Year Warranty Weight 8.0000