Explanatory notes
… heading covers, inter alia : (1) Reservoirs, vats, drums and similar containers not fitted with mechanical or thermal … products, etc. (3) Cloth, grill and netting of zinc wire, and expanded metal. (4) Zinc nails, tacks, nuts, bolts, … roof capping, skylight frames, rainwater heads, door or window frames, balustrades, railings, frameworks for …