Wood Window Low-poly (Polygon mesh 3D model) is available on CGTrader for $4. Original author: Banism. Specs: 160 polys, 176 verts.
OBJ (OBJ, filesize: 17.9 KB), 3DS (3D Studio, filesize: 11.4 KB), DAE (Collada, filesize: 46 KB), BLEND (Blender, filesize: 522 KB), FBX (Autodesk FBX, filesize: 32.4 KB)