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Continue to ChatKL-FSB-3S-19.1-1-D - Brass, Retracted Bolt length 19.1mm, 4 Locks, Double Key, Castell, FS Type, KL Dual Key Interlock https://www.concretespares.ie/product/kl-fsb-3s-19-1-1-d-brass-retracted-bolt-length-19-1mm-4-locks-double-key-castell-fs-type-kl-dual-key-interlock/