ADDED SECURITY – Prevent forced entry by reinforcing the weak spot of your door with the non-recessed door lock reinforcer; use to reinforce and repair both metal, fiberglass and wood doorsBUILT TO LAST – Made of solid stainless steel, the door lock reinforcement plate comes finished in stainless steel to fit over a single bore hole on your doorEASY INSTALLATION – All the necessary mounting hardware is included with the lock reinforcement plate for a quick and easy installation; the door reinforcer plate is pre-punched for mounting. Remove the protective film after installationDIMENSIONS – The door lock reinforcement plate is designed for 1-3/4 inch thick doors only that have a 2-1/8 inch bore hole through the door with a 2-3/8 inch backset from the edge of the door to the center of the bore holesNOTE – Make sure to dry fit the 3-7/8 inch wide by 4-1/2 inch tall with a 0.03 inch thickness door lock reinforcer before permanently installing and refer to the line art drawing and compare with your needs before purchasing