These are square panels, nice wood vertical strips on a thick felt like base. Price was very reasonable. There are several in a box. Probably can check them out online.
I saw these a while back, but have not purchased any. They look nice but the absorptive part is only an inch or so thick. Not going to do anything for bass, but should have some effect on high frequencies. If domestic tranquility is very important they might fit the application better than some more expensive options which are four inches or more thick.