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handspike,supporting wheel,rack and pinion connectors etc.
It is mainly used for Venlo greenhouse roof ventilation, the greenhouse air circulation could be maximized duet to alternate vent system.
Name | Model | Specification |
Alternate Vent Pinion | CLJC-1 | --- |
Alternate Vent Rack | CLJC-1050 | L=1050 mm |
ALternate Vent Rack | CLJC-1200 | L=1200 mm |
Rail Vent Rack and Pinion