Vivosun ventilation exemplifies our commitment to detail and performance. We sell only the highest quality duct fans, inline fans, filtration kits, ducting, silencers, carbon filters, oscillating fans, exhaust intake fans, and booster fans. Vivosun fans are designed for efficient movement of air at low energy use and low noise. Each fan comes in multiple sizes to fit the various sizes of tents and grow spaces that growers use. Each fan comes with a warranty so you’ll never have to worry about a defective product.