Steel grating, gulu lazitsulo lazitsulo lopangidwa kuti lizitha kunyamula katundu wolemera pang'ono, lakhala chinthu chofunika kwambiri pa zomangamanga zamakono ndi mafakitale. Wodziwika chifukwa cha kulimba kwake komanso kulimba kwake, chitsulo chachitsulo chimagwiritsidwa ntchito kwambiri m'malo osiyanasiyana, kuphatikiza pansi, mezzanines, masitepe, mipanda, ndi zina zambiri.