6909190030 - Supports for catalysts, consisting of porous cordierite or mullite ceramic pieces, of an overall volume of not more than 65|l, having, per cm$2|of the cross-section, not less than one continuous channel which may be open at both ends or stopped at one end Harmonized System Codes, Taric Code, HS Code, HTS Code, Harmonized Commodity Description, Commodity Codes, Classification of goods, Tariff Nomenclature, Customs Tariff Number, Tariff Classification.