Warning.... Received a warped hot tub. Cover will not seal due to the side of the tub not being level. This allows heat and moisture to escape. See image which shows the side sagging about a 1/2 inch. Tub is on level ground. This issue was present day one prior to putting water in it. I was hoping the hot water would allow it to relax to its regular shape. These things are made of thermo plastic shipped in the heat on their sides wrapped in some sort of compressive wrapping.