Kitchenaid W10272068 Range Hood Replacement Charcoal Filter (2-Pack) Charcoal Filters are used to remove odors when range hoods are set to recirculate air back into the kitchen Replace your filter every 6 months to improve air circulation and remove odors Filter Dimensions: 7-5/8" x 7/8" Consult your range hood's use and care manual to ensure filter's compatibility