Description
- 4 meter long chain to reach higher than possible with a manual crank
- shaft with hole designed to work with 3/4″ EMT or larger
- 5:1 gearing for easy roll up of long greenhouses
- Pawl mechanism to lock the side curtains in place
- Excellent for side wall curtain ventilation
- Easy to use side handle or bearings to follow 1″ pipe
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