Solera Slide Topper Slide-Out Protection for RVs, Travel Trailers, 5th Wheels, and Motorhomes

Does this come with rails and hardware to install? everything i need? which do i purchase i have 3 slide outs they measure 66in, 84 in, and 117 in?

My slideout width, including flanges, is 110.5". Which size should I order?

Does this come with the new oval bar and mounts or the old hex bar mount?

What does the mounting hardware consist of?