Two pack of universal cut to size grease and charcoal odour cooker hood filters. These cooker hood filters feature a service life simulation and will turn red when its time to replace the filter. Changing your filter regularly helps to keep your kitchen fresh and clean.  Specifications Rangehood/ Cooker Hood Grease and Odour FiltersTo fit most makes. 2 Sheets of White grease Filters - 47cm x 57cm 2 Sheets of Charcoal/Odour Filters - 47cm x 57cm Just cut to size. Use your old filter as a template. Thickness approx:1x paper type filter (changes colour) 1mm thickness, and 1x Charcoal filter 3mm thickness When installing: Chacoal Filter First - Either side down Paper filter with writing facing down Change when it changes colour to red