Gearbox kit 4:1
The lightest gearbox kit is the 4:1, which is only available for interior projects.
Gearbox kit 4:1
The 4:1 gearbox can operate up to 18m2 of 50-A louvers, and up to 12m2 of 80-R louvers.
Crank & rod
When a gearbox is beyond reach, a crank & rod can be used to operate the blind. Simply hook the rod into the eye at the end of the fixed shaft of the gearbox, and turn the crank.