This is the Electrolux Cooker Hood Carbon Filter 22.5 cm x 24.1 cm 
Recirculation cooker hoods draw in cooking vapours, filtering the air through a charcoal filter and then re-circulating the cleaned air back into the kitchen, leaving it free from cooking odours. The carbon filtration process guarantees air purification and a pleasant cooking environment.
This active carbon filter absorbs grease and moisture while cooking, preventing unpleasant odours in the kitchen. The non-toxic charcoal in the filter works under any temperature or humidity conditions.
To keep your kitchen smelling fresh it is recommended that you replace the carbon filter every 3 to 4 months, depending on the cooker hood usage and type of cooking (fried, fatty food, steam etc.).
This filter measures: 225 x 241 x 30 mm