The Arm-A-Dor A101-002 automatically relocks and the A102-002 manually relocks, both with alarms and fit door widths of 3' to 4' and jambs up to 6-3/4". This revolutionary panic exit hardware is built for security and durability to help prevent back door break-ins with its through-door bolt and washer design that is attack resistant. Get aggressive in the fight against back door break-ins. Arm-A-Dor panic hardware gives you protection against forced entry comparable to a drop bar while still providing a quick way out for employees and customers. Rugged Arm-A-Dor panic hardware is made with 12-gauge telescopic steel tubing to withstand attacks and the abuse of countless openings and closings. And it meets the UL 305 and 10B standards for panic and fire exit hardware and the NFPA 101 Life Safety Code enforced by fire marshals and building inspectors. Provides resistance to forced entry attacks per UL1034 standard. Locking members extend 1-1/2" over frame on each side.