A locking astragal comprising: a bolt having a bolt retracted position and a bolt extended position; a lock having a locked position and an unlocked position, the lock locking the bolt into the bolt extended position when the bolt is in the bolt extended position and the lock is in the locked position, the lock having a wall, which prevents movement of the bolt and locks the bolt into the bolt extended position, when the bolt is in the bolt extended position and the lock is in the locked position; the lock unlocking the bolt when the lock is in the unlocked position, the lock having a keyway, which allows at least a portion of the bolt to pass therethrough when the bolt is unlocked. The locking astragal can be used with a variety of thresholds, sills, headers, doors, and door frames