PVDC grades are available in 2 types of polymer: (I) the historic grades offering medium to high barrier properties and (II) a super barrier coating grade offering the highest barrier. The SBC grade has over two times the barrier to moisture and oxygen per gram coating weight compared to the historic grades. The most common structures using the super barrier PVDC are triplex configurations 250µ PVC/25µ PE/120gsm PVDC up to 250µ PVC/25µ PE/180gsm PVDC, with WVTR of 0,11 down to 0,06 g/m2/day and available from various suppliers.