For entrance doors. Dead-bolt and dead-locking latch. The latch-bolt is operated by handle or cylinder from either side. The dead-bolt is operated by cylinder from either side. Anti-corrosion galvanised internal components. Laquered polished brass removable faceplate and striker. Zinc-plated steel case. Reversible, nickel-plated silent action latch. Nickel-plated bolt for latch dead-locking. Nickel-plated cut-resistant dead-bolt, with a 25 mm protrusion.