Medieval Door Low-poly (Polygon mesh 3D model) is available on CGTrader for $13. Original author: KyriakosN3D. Specs: 1495 polys, 1011 verts.
OBJ (OBJ, filesize: 425 MB), BLEND (Blender, filesize: 425 MB), ZTL (Zbrush, filesize: 425 MB), MA (Autodesk Maya, filesize: 425 MB), FBX (Autodesk FBX, filesize: 425 MB), UASSET (UnrealEngine, filesize: 425 MB)