Product Description
The carbon filter is crucial when the hood is used in recirculating mode. Elica developed it specifically for all its range hoods in order to maximize air purification capacity when dealing with the dirty air produced during the cooking process. The carbon filter must be replaced every 3-4 months.
From the Manufacturer
Disclosures

Cancer and Reproductive Harm - P65Warnings.ca.gov
The carbon filter is crucial when the hood is used in recirculating mode. Elica developed it specifically for all its range hoods in order to maximize air purification capacity when dealing with the dirty air produced during the cooking process. The carbon filter must be replaced every 3-4 months.