FC-50 Replacement Filters Compatible with Vitamix FoodCycler Composter FC-50 and FC-30 Models,with Activated carbon filters Activated carbon filters are used to eliminate any odors produced during the natural composting process,Keep the smell in your kitchen and the surrounding areas fresh and clean. Create fresh air for you and your family Easy to install, no tools required. When the filter is rotated clockwise into place, disassemble and replace it clean and without confusion The package includes 4 Packs FC-50 replacement filters,The FC-50 filter substitutes have a user-friendly design and can be easily installed FC-50 replacement filters are expected to last approximately 3 months depending on frequency of use and the types of organic materials that are being processed FC-50 Replacement Filters Compatible with Vitamix FoodCycler FC-50 and FC-30 Models - with Activated carbon filters