8 Pcs Charcoal Filters Compatible with Van Ness Cat Litter Box, 4.5 x 6.5Inch Replacement Activated Carbon Premium Odor Filters for Pureness F6 Zeloite Air Filter, BlackCompatibilityOur carbon filter is perfectly compatible with the VanNess cat litter box, precisely fit without gaps for optimal performance. HIGHLY ABSORBENTThese activated carbon filters (fibrous) are made of high quality powdered activated carbon as the adsorption material, and the high density polymer binding material is used to attach the carbon to the fiber. Reduce Odors at HomeThis cat litter box filters are aimed at controlling the odor of the