Master Lock Keyed Entry Door Lock, Commercial Lever Style Handle, Brushed Chrome, SLCHKE26D DOOR LOCK APPLICATION: For indoor and outdoor use; Best used for heavy-duty commercial exterior entry doors EASE OF USE: Six pin Schlage C compatible cylinder; Removable thru-bolts and clutch feature DURABLE DESIGN: Cylindrical construction for enhanced durability HEAVY DUTY SECURITY: 3 hour UL listing; Meets ANSI/BHMA A156.2, Grade 2 standards SPECIFICATIONS: 3-1/4 in. diameter trim; 2-3/4 in. fixed backset latch; Includes two keys