CHUBB auto locking cylinder nightlatch operated by 6 pin brass cylinder. Champagne Gold (CG), Polished Brass or White case finish; 60mm case (B) (4L73) or 40mm case (B) (4L74);supplied with 3 keys; 20,000 key differs; door thickness 38mm - 57mm. Latchbolt withdrawn by handle from inside and key outside.; handle can be deadlocked by key from inside. Bolt can be held back by use of the snib button or locked open by use of the key in the handle.

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