Not only do these serve a purpose but they also look very professional.They were a little bit smaller than expected with each tile coming in at 11" wide and 10" high.If put in the formation shown they measure 45" wide and 29.5" high.All in all a very good buy, the foam is of good quality and has definitely improved the overall sound quality of my recording studio but I would not suggest using these just by themselves, you will have to purchase other acoustic tiles as well (see my other reviews).Also I attached these to the wall using no-nails which worked absolutely perfectly but they do come with a double sided tape if you are renting and do not want to commit to having them permanently attached.Would definitely recommend as it gives any room a touch of modern style :)