The Bofa AD 4000 iQ fume extraction system delivers superior and measurable performance, ensuring airflow and filtration is maintained even when particulates start to build up from the triple DeepPleat DUO and combined filter setup. This makes it suitable for the most demanding and complex installations, so you can rely on extended filter life, together with effective removal of fumes and particulates. It’s user friendly too, with a design that makes easy work of filter changes. And the easy to read and access controls display panel is conveniently located on top of the unit. The Bofa AD 4000 iQ’s design permits greater flexibility. Different exhaust configurations allow recirculation via the rear panel or externally vented hose connection systems.