Interior knob is Georgian. Deadbolt thrown or retracted by key outside or by turn unit inside. Latch by thumbpiece from outside or by knob from inside. Both pieces have dual option latch which includes 1/4" round corner and 1" circular drive-in latch adjustable for 2-3/8" or 2-3/4" backsets. 2-1/4" x 1-3/4" full-lip square corner strike. Grade 1 security features. Lifetime mechanical and finish warranty.