We design a 2 story system with 90 degree stops top, three 180 degree turns in between and a short 90 degree bottom to fit the built in stairwell. It took a few weeks more than they estimated, but Ameriglide team came through for every task. The kitted unit arrived on a 750 lbs. pallet air freighted from UK and delivered to our driveway in Virginia 2 days later. The install team were skilled and worked very hard to install very carefully with no mistakes. I ended up with a great system I am using many times per day since installed.