Replacement Old Type GU 35mm Backset Latch Deadbolt Single Spindle Door Lock Centre Case This highly popular Old Style 35mm Backset GU centre case is an ideal replacement unit for your multi point door lock. Suitable for Euro profile locks, this latch and deadbolt centre case has a single spindle operation and 92mm PZ Centres. Single follower operation. Key Measurements & Information Backset: 35mm PZ Centres: 92mm (distance from centre of spindle to centre of key) Follower / Spindle: Single Centre Case: Latch & Deadbolt Non-Handed (will fit left or right handed doors)