MINI DOOR Shields are one piece and are designed to go around the edge of the door to help prevent the door from splitting when it is kicked. MINI Door Shields are very effective and can be installed in a matter of seconds, with 2 screws and no pre-drilling. MINI Door Shields are also very difficult to see from the outside of your house, which makes them very popular for anyone wishing to avoid changing the appearance of their door. The downside of the MINI Door Shields is the fact that the Door Shield and the Jamb Shield must fit into the same space between the door and doorjamb. This is why we recommend that users to see if they can fit two quarters between their door and door frame before ordering kits with MINI Door Shields. PRO Door Shields come as a 2-piece kit and are attached by screws that go through the door. PRO Door Shields are more difficult to install than MINI door shields but installation is still quite simple. Pro Door Shields are made with a 90-degree bend, which is designed to add additional prying protection. The PRO Door Shields work extremely well with the Pry Shields because they fit together to make a stronger seal against prying. The primary downsides of the PRO Door Shields are the cost (they cost more), more difficult installation (must drill through the door) and it is more visible on the door.