This square framed active panel, temporarily replaces one of your doors on your multi-force blue door prop. Adding this attachment allows you to simulate, defeating outward opening metal doors that need to be crushed in order to get your tool behind the jamb. The prop also has Drop bar brackets on the inside that allows you to defeat an outward opening door that has a drop bar attachment on the inside. Once the drop bar is defeated, and the edge of the metal door is crushed you can then force the door open conventionally defeating the locks. This is a great addition to your already versatile, multiforce blue door. The door lock pocket is adjustable for a quick easy fit. This attachment can be added to any existing door in a matter of minutes. When not in use, simply remove and reinstall your original active panel back.