Abstract: An apparatus for reinforcing door jambs to prevent forced entry through the doorway by strengthening the composite materials of the door jamb with the addition of the apparatus, which is attached with threaded fasteners that go through the door jamb and are anchored into the framing studs. The device is made of 14 gauge ASTM, A-36, Mild Steel with holes through which the latching and locking mechanisms of the door may pass, as well as smaller beveled holes to pass screws through to attach the device to the door jamb and framing studs. The device is also formed so as to facilitate latching mechanism closure. This device can also be used to assist in the repair of damaged door jambs by holding together the damaged portions once they are placed back in position.