What do I need the back wall and the back wall fan in the grow box complete set for?
The fan is used for better dehumidification and mixing of the air and improves the effectiveness of the system. In addition, the back wall creates a barrier between the cooling system and the planting space and prevents plant parts from adhering to the cold back. These back panels with the fan are absolutely necessary to achieve the best result. This is the only way to mix the air inside, keep the effectiveness high and dehumidify faster and more efficiently.