Odor-Free Living - Compatible with Litter-Robot 4 carbon filters deliver fresh air by utilizing activated carbon's natural absorption to eliminate odors and maintain a clean home environment. Precision Fit - Expertly designed, our Litter-Robot 4 filter replacement slides in effortlessly, providing a secure fit that prevents leakage, making maintenance quick and easy. Advanced Odor Neutralization - Each charcoal filter replacement is packed with dense, odor-absorbing material, ensuring maximum freshness throughout your room. Long-Lasting Freshness - These charcoal litter box filters work continuously to trap odors and maintain a consistently pleasant environment, reducing the need for frequent replacements. Optimized for Your Pet's Health - Our charcoal filter for litter box prioritizes your pet's well-being, using safe, non-toxic materials that help purify the air they breathe. Color: Black. Material: Sponge. Size: Thickness: 10mm. Package Contents: 6 x Filter Replacement. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement allowance is +/- 1-3cm.