Material: Replacement filter made of premium activated carbon with strong adsorption capacity that can absorb and filter odors for a long time. Do not rinse before use Dimensions: The size of the carbon filters is 16 cm 16.5 cm, and the thickness is 1 cm, you can cut it into the desired size. Suitable for: The odor filters fit well with the dome litter box and most other cat litter boxes of different shapes, help to eliminate litter odors Keep the air fresh: The odor filters solve the problem of unpleasant litter odors, do a good job of eliminating odors, maintaining fresh and clean smells, keeping your pets healthy and in a good mood, and making you live a happy life with your pets Package contents: You will receive 6 replacement cat litter filters, and it should be replaced every 2 to 3 months. Enough Quantity for Replacement 6 Pack Cat Litter Box Replacement Filters - Square Shaped Carbon Filters for Cat Litter Box - Odor Replacement Filters The filter works with a strong absorption effect that helps the litter box keep odors fresh and clean like new. Material: Replacement filter made of premium activated carbon with strong absorption capacity that can absorb and filter odors for a long time. Do not rinse before use. Dimensions: The size of the carbon filters is 16 cm 16.5 cm, and the thickness is 1 cm, you can cut it to the desired size. Suitable for: The odor filters fit well with dome litter boxes and most other cat litter boxes of different shapes, helping to eliminate litter box odors. Specifications: Material: Carbon. Dimensions: 16 x 16.5 x 1 cm. Color: Black. Package Contents: 6 x Cat Litter Box Replacement FiltersGood quality product