This page contains free "Stairs wooden staircase Free 3D model purchase", which is a work by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 164 KB), OBJ (OBJ, filesize: 214 KB), 3DS (3D Studio, filesize: 286 KB), DAE (Collada, filesize: 358 KB), FBX (Autodesk FBX, filesize: 296 KB), IGE (IGES, filesize: 299 Bytes), MAX (Autodesk 3ds Max, filesize: 278 KB), SKP (Sketchup, filesize: 493 KB), OTHER (Other, filesize: 182 KB)