I installed our storm shell out doors on a deck post. The instructions for the storm shell are only for installing on studs. I had to get this adapter to make it work. There were only instructions for installing the adapter on non-standard studs, not for an individual post. The instructions overall were very confusing. I still don't know what the wood piece is installed on the back of the panel or what some of the extra holes are for. There needs to be better instructions that are clear to anyone. Also a video on using the adapter would be great. The only video I saw was for a standard installation. I still don't know how waterproof this unit is. I had to tape up several drilled holes and 't looks like rain in strong winds could get in. We'll have to see. I taped up the grommet for the cord since it wasn't waterproof.