Fairly permanent...As long as we live here, that's where the relief will be. The wall vacks to a coat closet, so it's possible to add reinforcement from behind if necessary. I know we could use L shaped clips, through the wall....with plywood reinforcement....but I was hoping someone could tell me where to get the clips or any other device for hanging such an item. Otherwise, I'll have to have them fabricated. Thanks for whatever help you can give.