Efficient Greenhouse Sidewall Roll-Up Hand Crank Unit
Durable galvanized steel frame with corrosion-resistant coating ensures long-term outdoor use. Precision-engineered gears provide smooth operation, reducing manual effort during frequent adjustments. Heavy-duty polyethylene fabric attachment resists UV rays and extreme weather, maintaining flexibility in temperatures from -20°C to 60°C. Reinforced stitching prevents tearing under tension. Ideal for commercial greenhouses, nurseries, or hobby farms to regulate ventilation effortlessly. Compatible with most standard sidewall films or curtains. Direct bulk pricing available for wholesalers—minimize costs without compromising quality. Ships globally with guaranteed lowest market rates.