KT21F-ACW27S24.553MT KT21F-ACW27S-24.553M-T KT21F-ACW28S16.369MT KT21F-DCU28A13.000MT KT21F-DCV28A13.000MT KT21F-DCV28B26 KT21F-DCV28C KT21F-DCV28C19.200MT KT21F-DCV28C-19.200M-T KT21F-DCW28D19.2MT