We use the “egg crates” to attach to PVC pipe turtle floats in our ponds. A few of the side pieces had broken a few weeks ago and needed repair. These crate pieces were just the right size. The material seems thinner than the previous crates in the past from another company, but they worked fine. The side where the pieces were cut seemed short, so we are a bit worried about the turtles during themselves. Also, in our repairs one broke though we used zip ties to hold it back in place.