This window is modeled in Cinema 4D. The native file is . C4D. Other formats offered, .3DS, . FBX, . OBJ and . MTL. Only one texture is fooled, the other textures can be set up by all 3D programs.
C4D (Cinema 4D, filesize: 1.02 MB), OBJ (OBJ, filesize: 853 KB), FBX (Autodesk FBX, filesize: 113 MB), 3DS (3D Studio, filesize: 209 KB)