Metal grease filter for Cata Isla Gamma, Isla C island hoods. Extracted mode: In this mode, the exhausted air – after passing through the grease filter – goes outside through a pipe system or into the ventilation duct designed for this purpose. It is important that with this version, we also ensure the inflow of fresh air, because this is the only way for the devices to work with sufficient efficiency, not to mention that it is not enough to exhaust the used air, it is also important to supply it properly. Depending on use, the metal grease filter should be cleaned once a month. The metal grease filter can be washed by hand or even in the dishwasher. In the case of internal circulation mode, the use of an activated carbon filter is required: our range of activated carbon filters