$5 steel frame carport 05 3D model by ahammodullah. Available on CGTrader with 20142 polys and 20276 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 4.17 MB), BIP (KeyShot, filesize: 22.3 MB), MA (Autodesk Maya, filesize: 13.1 MB), BLEND (Blender, filesize: 899 KB), FBX (Autodesk FBX, filesize: 1.17 MB), SPP (Substance Painter, filesize: 28.5 MB)