Luxair offer a unique washable filter for the LA-Cosmic-Island and LA-Cresta (all models) of kitchen extractor. This filter requires a special grill for the charcoal filter to fit in to, this then attaches to the metal grease filter. Please see pictures attached and the PDF diagram below.
The filter can be washed to prolong use of up to 2 - 3 years. Simply wash them in warm soapy water or in a dish washer then place in a pre heated oven for 15mins to dry out.
The price is for 1 pack of 1 washable charcoal filter.