I have an Adco cover and will never use a cover again! After using the cover for only two years I had worn spots showing on the air conditioner cover and if it wore there, where else was it going to wear? The rainspouts wore holes in the cover also. I decided that the unit sits out at the dealer and the full timers can't cover theirs, so I'm not going to cover mine again. By the way, my cover is for sale, only used in the winter time and has no mileage on it and is custom made for a 35ft 5er. This will be the second winter I haven't covered ours, but then again we are planning on using it in Jan for a month or so, kind of hard to uncover when it is covered with ice and snow.