At J&D, air ventilation is their specialty. The main purpose of air recirculation—more commonly known as Horizontal Air Flow (HAF) in the greenhouse industry—is to cool and control the climate of your building to foster healthier plants and produce. Recirculation fans also keep your space dry by reducing the collection of moisture and condensation during periods of high humidity. These fans range in size from the 12" Green Breeze HAF Fan to the 60" Indoor/Outdoor Ceiling Fan, meaning we've got exactly what you need to keep your greenhouse breathing.