i dont know, its a six foot fence i cant see over it some of it sounded like wood. they are new they only moved in a couple of weeks ago. i thought they were better than the last ones, now im not so sure. you can put things beside the fence and not make much noise. i was so used to talking to him every day, he used to come up to the side of the cage when he saw me and say "hey sweety" and push his face against the cage looking for a kiss. he would even say "give us a kiss"