This specific 3D model, "Door Decorative Plasma CNC 3D model 7", is an asset made available 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.
SLDPRT (SolidWorks, filesize: 30 MB), DXF (DXF, filesize: 8.46 MB)