The plastic sheet was too long!
Everything except the plastic sheet was too long. I ordered 36" x 60" and I received 36" x 61". The website noted that they are going to cut the plastic longer than the size I ordered. I know it is nicer to get a longer plastic sheet than too short but I did not like having to trim the thick plastic sheet. It was hard to cut the plastic sheet straight. It was much nicer if I had received the plastic sheet exactly 60" long.