Material: Polyurethane
The air inlet is connected in series by hard connecting rods on the fan blades, which can precisely control the opening direction of each layer of fan blades. A sealing device is added at the bottom of the fan blades, which means that in the early opening stage, air will not flow to the animals under the fan blades. Instead, the air is guided upward into the breeding house.
The curved fan blade guides air upward during minimum ventilation, but also directs air downward when it reaches the maximum opening state. This makes it an ideal ventilation device during the maximum ventilation period.
The window sash is equipped with a buckle device.
The closing buckles on the fan blades can be used to permanently close the blades. According to different solar terms, the opening state of the fan blades on each layer can be adjusted, and the unused blades can be closed. This helps maintain the temperature inside the house.
