Well it was a decent unit for about 2 years.  It was in a sheltered area beside a wall of cedars for protection when I installed it.  I did exactly what it should but I could see the material was starting to fatigue due to UV at year 2.   I bought the protection warranty as well.   At 2 years 4 months the cover gave way with a giant tear in it.    The protection package I purchased was pointless because they said natural causes.  So if I had driven into it by accident it would have been covered but because it tore due to natural causes I'm out a cover.   Pointless.  DECLINED.   I'd love the manufacturer to offer a top with no frame.  I'd even buy it.