Expandable Safety Barrier Set (Polygon mesh 3D model) is available on CGTrader for $29. Original author: HQ3DMOD. Specs: 595912 polys, 610908 verts.
OBJ (OBJ, filesize: 17.3 MB), BLEND (Blender, filesize: 108 MB), FBX (Autodesk FBX, filesize: 28.6 MB), TEXTURES (Textures, filesize: 38.9 MB), MAX (Autodesk 3ds Max, filesize: 174 MB)