The Fullex XL inline split-spindle latch and hookbolt centre case is available as 35mm backset and 92mm PZ.
The inline split-spindle case requires its matching divided spindle and furniture. Do not substitute the adjacent single- or dual-follower case simply because the backset and PZ agree.
Replacement fit: compare the exact case version, backset, follower arrangement, fixings, latch/bolt positions and drive connections to the locking strip. Matching the brand or PZ centres alone does not establish interchangeability. A gearbox repair retains the existing strip and keeps only when those parts remain serviceable and compatible.
Case revision: the manufacturer inline-split drawing shows a 227mm by 50mm outline, while the supplied catalogue specification is 228mm by 47mm. Confirm the exact case generation and outline against the original before ordering; the adjacent single-spindle drawing is not a substitute.
Security performance depends on the complete doorset and its specified lock, keeps, cylinder, furniture and installation. A range-level approval does not establish a separate Secured by Design or PAS 24 certification for a loose replacement gearbox.