GU Ferco 4 Roller Cams, 28mm Backset, 70mm PZ, Suits 3.28, 5.28, and 6.28. This Part Features the Newer Gearbox Design. UPVC Screws. Backset: 28mm. Note that if you are using this lock to replace the old Fuhr 70mm PZ door locks, you will also need to fit a 7mm spindle to suit the new GU lock.
eBay