These are the temporary pool skimmer basket things that they installed before the concrete was poured. They’ve been sitting in my garage for a couple years and about to find the trashcan if you have a Hayward pool skimmer for your inground pool and top square is broken. I have two replacement squares if you have some other creative interesting idea for them please come take them. The square is 10 1/2 x 10 1/2 and 4.75 inches tall. The circle is 8 1/2 OD.