I bought these to fit in the area where the latch goes into the door frame when the latch is locked. The pre-drilled holes in these panels were in the correct position to attach the panel (I used 2 of them) to cover the bolt hole area and I used 3" screws to attach it to the door frame. Once they were in place I plastered them one by one and now you can't see them or try to remove the decking screws. It's not bulletproof, but it will cause some extra heartache for a would-be thief trying to break into my campground.