Used adhesive backed Velcro on wood and sewed the other piece to the clear vinyl and put together. The thought was that I could then pull it on and off when needing access to the sand box area. Didn't work out well because once it became really cold the adhesive no longer wanted to adhere. Even gorilla glue did not work. I ended up putting screws into the Velcro to keep it on and I'm still not really wanted to pull it on and off very much because I'm afraid it will tear off.