We have 2 of these sliders, they are 40 feet long. They are made out of similar material as a zodiac boat, the pipes on top are PVC, there are 2 pipes parallel to each other. Pipes on top are in 6 feet long sections, one of those sections is missing in action, but would be easy to make. $1800 for both or $1200 for the complete unit and $1000 for the one that is missing one section of slider tube. One is brand new never used, that is the $1200 unit, the other has been used 3 times.