Range Hood Recirculation Kit / Replacement Charcoal Filter (2-Pack). When venting air to the outside is either not possible or not desirable a recirculation kit with charcoal filters allows air to be cleaned and then recirculated back into the kitchen. Charcoal filters should be replaced every 6 months to keep the kitchen fresh. Dimensions are 12.5" by 10.25" by 1.5".. Measure your current filter to ensure correct replacement.... - Range Hood Recirculation Kit / Replacement Charcoal Filter (2-Pack). | 
