Instruction for use
Ventilation &shading system
Application
greenhouse ventilation/shadng system
Pinion Type
A type/B type
Pinion Thickness
Cover Material
Pinion Sleeve
Nylon/Copper Pinion Bolts Numbers: Two bolts or four bolts
Ventilation system
Open and close window
Shading system
internal/external system
Material
Hot-dip galvanized steel