The Defender Security MP9492 Stainless Steel Lock and Door Reinforcer assists in preventing forced entry by reinforcing the weak spot of your door. It can be used to reinforce and repair metal, fiberglass and wood doors. Constructed of stainless steel, the lock reinforcer plate comes in a stainless steel finish. All the necessary mounting hardware is included for a quick and easy installation. The lock reinforcement plate is pre-punched for mounting. The reinforcer is designed for snug fit on a 1-3/4 inch thick doors that have mortise or drive-in latches. Measuring 4-5/16 inch wide by 4-1/2 inch tall, the reinforcement plate will covers previously drilled bore holes on your door. The door reinforcer will sit flush on your door where the door latch area is damaged.