Airlift S20, Shutter Exhaust Fan 20

Airlift S20 is a 20-inch shutter exhaust fan with a 10-level speed controller for wall-mounted ventilation in large spaces like greenhouses, workshops, garages, and warehouses. Its EC motor with PWM control delivers up to 3425 CFM (about 5820 m³/h) while limiting noise to 65 dBA and reducing power draw. The assembly features weight-balanced aluminum blades, steel wire guards, and IP44-rated steel shutters that close when the fan is off to block dust and debris. The included controller provides precise speed adjustment with memory backup. The unit measures 23.03 x 23.03 x 11.21 inches and is rated for 67,000-hour dual ball bearings. Model AC-ALS20 operates on 100-240 V AC and draws up to 230 W. Suitable for active exhaust in permanent wall openings.