SI Siegenia Tilt and Turn TBT Drive Gear Upvc Lock Mechanism Genuine Original SI - GR120 1201-1600 F / TGMK Gr. 120 FFH 1201 - 1600

SI Siegenia no longer trade and there items are obsolete and extremely rare 

These SI Siegenia tilt and turn drive gear mechanism's replace the old yellow coloured SI Siegenia drive gear mechanism's. 


This SI Siegenia tilt and turn gearbox/mechanism has a 15mm backset comes in a few different sizes, to indentify the correct tilt and turn gearbox size you require you will notice markings stamped on the tilt and turn gearbox mechanism.

GR120 1201-1600

Printed on the mechanism is;

F / TGMK Gr. 120
FFH 1201 - 1600

Technical Diagram-