Material: Mainly made of safe, strong and durable metal material for a long service life.
Self-Locking: Self-locking and the automatic brakes hold the side walls in place.
Features: Small size, low noise and easy installation, setting the limit on hoop house ventilation motors.
Purpose: Sidewall Manual Crank Winch can help your greenhouse side and roof ventilation flourish and creates a better environment for plants.
Application: Suitable for breeding greenhouses, flower greenhouses, connecting film greenhouses, fruit greenhouses.