Concrete-filled Lally Columns-also known simply as Lally columns-provide permanent structural support for beams, joists, and floor systems in residential and light-commercial construction. These Prime-painted, cement-filled steel columns come in 9' stock lengths with a 3-1/2" outside diameter and are supplied complete with top and bottom mounting plates. Durable and ready for installation, they offer reliable load-bearing performance for basements, crawlspaces, renovations, and new construction.