Outdoor Billboard 3D model is available on CGTrader for $5. Original author: alexfoto. Specs: 2264 polys, 2330 verts.
STL (Stereolithography, filesize: 226 KB), OBJ (OBJ, filesize: 296 KB), ABC (Alembic, filesize: 238 KB), FBX (Autodesk FBX, filesize: 110 KB), MAX (Autodesk 3ds Max, filesize: 3.89 MB), GLTF (glTF, filesize: 124 KB), BLEND (Blender, filesize: 1.04 MB), DAE (Collada, filesize: 439 KB), 3DS (3D Studio, filesize: 103 KB), C4D (Cinema 4D, filesize: 291 KB)