The Super Performing Charcoal filter MCFB60 - 1 Piece. Also known as a Long-life Charcoal Filter this filter can be regenerated offering an extended life and superior filtration over a standard single use charcoal filter. The Charcoal Filter uses Active Carbons To Remove Odours And Absorb Grease While Cooking. This Guarantees Air Purification And A Pleasant Cooking Environment. The super performing Filter Can Be Regenerated Every 3-4 Months up to a Maximum of 8 regeneration cycles unless the cooker hood is predominately used in intensive mode in which case the filters will need to be regenerated More Frequently & it is not recommended to exceed more than 6 regeneration cycles.