Insimbi engagqwali wire mesh (ebizwa nangokuthi indwangu yocingo noma indwangu yocingo) iqinile, impahla yensimbi engagqwali eyalukiwe noma eshiselwe ngezintambo zensimbi engagqwali zezinga eliphezulu (amamaki ajwayelekile: 304/304L, 316/316L, 310S). Ifaka ama-apertures afanayo, amandla aphezulu, kanye nokumelana okuhle nokugqwala, ama-asidi, ama-alkali, namazinga okushisa aphezulu.