This specific 3D model, "Carved Picture Frame 3D model 73", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
The licensing terms for this digital asset are governed by "Unknown license".
STL (Stereolithography, filesize: 109 MB), OBJ (OBJ, filesize: 194 MB), FBX (Autodesk FBX, filesize: 62 MB), MAX (Autodesk 3ds Max, filesize: 180 MB)