Mila used to market this lock as the Mila Fearless UPVC Patio Door Lock. Yale Mila Inline Sliding Upvc Patio Door Lock Fearless 4 Hooks. 1 X Full length patio door lock. Locking Points: 4 Hooks. Screw hole to screw hole on the gearbox = 43mm set evenly each side of the spindle hole.
eBay