This specific 3D model, "Functional Double Door style 8 multi-color and multi-material 3D print model purchase", 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: 627 KB), 3MF (3D Manufacturing File, filesize: 627 KB)