Includes: - 4 high-performance, low-noise acoustic filters for significantly lower noise - A sealing gasquet that can be attached onto a male flat duct before inserting the element into the appliance to ensure air tightness (The air outlet on the backside of the appliance can directly be accessed with a male flat duct element (DN 150) **Highly flexible and customized ducted extraction plannings are made possible – all further necessary flat ducting elements (DN 150) must be ordered additionally**