The film recommends a good solid core door, because hollow doors are the most vulnerable to burglars. In addition, two locks are very effective, since they will create a mental block for a burglar and act as a deterrent--even the most determined burglars can be discouraged by the time involved in breaking through two locks. The two locks should consist of a dead locking latch and a tubular dead bolt that is a minimum of 1 inch long and has a hardened insert. There should also be a tapered cylinder guard. If locks such as the rim lock, the vertical rim lock, and the mortise lock are used, they should meet the same specifications as the previously mentioned locks. There should be a strike in the door frame, but it must be properly mounted with two 1/2-inch-long screws that extend into the wall stud. Hinges should be mounted on the inside, or should have nonremovable pins if they are on the outside. If there are no nonremovable pins, the door should be studded. Finally, 12 inches of solid fill should encase the door frame, and all glass should have strong glazing materials.