Abstract: A door jamb for enhancing the security of entry doors. L-shaped metal angle plates are secured to the edge portion of the jamb near the bolt passages for latching and locking bolts. Flanges of the plates extend along the jamb edge with flat bodies of the plates providing structural backing for the jamb in the gap between the jamb and wall framing. Smaller metal angle plates provide flanges which form borders of the bolt passages and which are spaced inwardly from the flanges of the larger plates. The spaces between the flanges receive cushions that provide a shock absorbing effect when efforts are made to break in the door.