Type ZHLS is a robust conduit with a galvanised steel core and a thick, smooth TPO cover which is both halogen free and flame retardant. The conduit meets European environment and health & safety regulations with regards to toxic gas emissions and smoke density requirements. Type ZHLS meets the requirements of BS6853, LUL 1-085 and EN 45545-2 and is used in the metro-, train- and bus-building industry, in closed areas, airports, tunnels, (subway) stations and other infra-structure projects, but also in public buildings like malls, hospitals, and on eleva-tors and escalators.