Light dep Greenhouse Blackout Plastic Roll up Chain Crank, Greenhouse Film Chain Crank Winch, Greenhouse Plastic Manual Roll up Crank for Ventilation

This chain crank is lightweight, easy to install, easy to operate, sturdy, long life, rust resistant, high torque, water proof. It can be used to roll greenhouse plastics to high position or to the roof for light dep, ventilation or other purposes. It has a reliable bi-directional self-locking mechanism that will allow the film to stay at any desired position without moving. This greenhouse chain crank has wide application scope. It is used in all types of greenhouse and poultry house and can manually operate shading clothes too. Specifications: Condition: 100% Brand New Material: High quality steel Size: Approx. 10x6x5 inch Speed Ratio: 4:1 Single Net Weight: 6 pound Large Roll Height: 1.5 meters Large Reel Length: 120 meters Chain Length: 4 meters Service Life: More than 3 years Package List: 1*Manual Film Coiler

• This greenhouse chain crank can be used as a light dep greenhouse blackout tarp manual roller
• It can be used for greenhouse side ventilation and top film roller, coiler
• It has reliable bidirectional self-locking mechanism that will allow the film to stay at any desired position without moving.
• It is made of high quality steel covered with molded plastic cover, it is solid and strong, water proof and has long life.
• High-quality iron chain: anti rust and long life.