This 3D model was originally created with Sketchup 13 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 In my city we get a lot of wood that comes along with the imported items. This wood is sold as scrap. I designed this sofa with that wood in mind. The usually available sections are 4x1.5 . All the sections used here are of that size.