Ventilation Effortless, silent and clever. The 400 series and 200 series ventilation systems can be controlled manually or automatically, mounted on the ceiling, on the wall, above islands, or on the cooktop. Each option is extraordinary. As the kitchen becomes a place for both cooking and entertaining, having good ventilation becomes even more vital. Everything has been designed with discretion and airflow in mind, creating a system that performs exceptionally well and quietly behind the scenes.