$15 Carved Stair 03 Black Low-poly 3D model by shabnam3dart. Available on CGTrader with 179737 polys and 192760 vertices. Check it out on CGHub.
MAX (Autodesk 3ds Max, filesize: 18.8 MB), OBJ (OBJ, filesize: 16.7 MB), FBX (Autodesk FBX, filesize: 10.4 MB), STL (Stereolithography, filesize: 27.1 MB)