The Vents TT 100 duct fan with a diameter of 100 mm and ball bearings extends the life of your fan to 40,000 hours. Meets requirements for high pressure and low noise. Ideal for rooms with high humidity. Suitable for ventilation in ducts up to 10 meters. Can be installed vertically or horizontally. Multiple fans can be used for higher pressure or air capacity. With mounting plate for wall mounting.