This Bowater gearbox has a 35mm backset with an unusual 92/70mm double spindle mechanism. The case measures 234mm high by 52mm and self-tapping screws are required to fit it. Please note that early versions of this gearbox use different screw positions and are not interchangeable. Operation: Lift Lever Latch reversal: Unscrew the lock case with the latch facing left, remove the flat positioning plate, remove the latch clip, remove the latch retaining spring, reverse the latch then reassemble > SKU: BOWCASE35 Categories: Door Locks, Multipoint and UPVC, Multipoint Gearboxes, New Products Tags: Bowater, drox-brand Brand: Bowater