Manual Drives
Manual drives allow the operation of roof ventilation systems in greenhouses without electricity. A crank motion activates a gearbox that transfers rotational force to a drive shaft, opening or closing the ventilation flaps. These robust, low‑maintenance units are designed for daily use and provide a reliable solution wherever electrical power is not available.
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Manual gear - with sliding guide for rolling plastic film - guide for pipes diameter 27/32/33
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