So the LP Detector for our Imagine XLS 21BHE is in the space under the bottom bunk. This also happens to be the space the kids keep their duffel bags of clothes and book bags when needed. Being kids they keep knocking the LP detector off as they get and put back their bags.

To cover the detector, I bought this:https://www.amazon.com/Safety-Techno...d-0c3639671b2d

However the screws that came with it seem very long...anyone have any idea how think the walls might be? Are there wooden studs I could try and find to screw into?

I know I will need shorter screws, just trying to gauge how much shorter.

Thank you.