This specific 3D model, "Wooden door Low-poly 3D model 15", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
The license for this digital asset is "Unknown license".
BLEND (Blender, filesize: 4.73 MB), OBJ (OBJ, filesize: 63.5 MB), FBX (Autodesk FBX, filesize: 23.6 MB), GLTF (glTF, filesize: 15.5 MB), TBSCENE (Marmoset Toolbag, filesize: 12.2 MB), SPP (Substance Painter, filesize: 271 MB), TEXTURES (Textures, filesize: 36 MB)