This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 PowrTouch Touring Caravan or Boat Mover... Unfortunately run out of upload Mbs so had to drastically cut this model in half... All you have to do is just Copy it when downloaded and Paste it and then just flip along Red Line! to make up the other side... and join up...