PINNACLE brand chair lift, model #SL600. This chair lift does not have a lot of use, and always worked very well. Lifts 350 lbs., seat size is 19" wide x 16" deep x 18" high. Standard track length is 16'. when folded up, it is only 11" from the side wall. it is driven with a worm drive instead of cable drive and its claim is more smooth operation and longer life expectancy. I have more information available for someone interested. lowered the price and will consider offers.