Steel: Grinded stainless steel 304 Grinded stainless steel 316 Galvanized steel, powder coated (Qualisteelcoat certificate) according to RAL colour standard Powder coated steel (with galvanized base coating) according to RAL colour standard - only indoors Corten steel Wood: Exotic IROKO wood finished with colored/colorless oil Hard, varnished wood (eg. Brazilian oak or exotic TAUARI) - only indoors