This specific 3D model, "LIGNUM Doors 3d model Low-poly 3D model 4", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
The license for this digital asset is "Unknown license".
OBJ (OBJ, filesize: 48.1 MB), FBX (Autodesk FBX, filesize: 39 MB), MAX (Autodesk 3ds Max, filesize: 50.9 MB)