Check out SciFi Cube Object No 61939 Low Poly Shape Low-poly 3D model on CGTrader for $7. High-quality mesh by 3dmodelbase.
STL (Stereolithography, filesize: 1.83 MB), OBJ (OBJ, filesize: 3.77 MB), 3DS (3D Studio, filesize: 961 KB), FBX (Autodesk FBX, filesize: 10.2 MB), C4D (Cinema 4D, filesize: 1.67 MB)