This lock features 2 hooks which operate upwards and although it features the new style gearbox it should replace any locks sold since 2001. Please check the technical drawing to match your locking points.
Operation: Split spindle.
Inward opening: Push in the square button on the side of the case, remove the latch, reverse and reinsert.
Outward opening: Replace the latch with order code 3MDL4060