Perfect Match – Charcoal water fountain filters compatible with Aookupett, LEXVSS cat water dispensers, and other pet water fountains that use the same size. Great Value – Pack of 8, 12, or 16 cat water fountain filters for your pet water fountain. Dimensions: 4.4 x 1.69 x 0.35 inches (approx. 11.2 x 4.3 x 0.9 cm). Bulk packaging meets your replacement needs. Premium Quality – Each filter contains activated carbon, ion exchange resin, and non-woven fabric to help remove hair, heavy metals, and improve water taste. Replacement Recommendation – Replace carbon filters every 2 to 4 weeks to maintain water freshness, depending on the number and size of pets using the fountain. Pre-Use Instructions – To minimize activated carbon dust (harmless to pets), soak the filter in water for 2 minutes and rinse thoroughly under running water before first use. Improved Taste – Reduces chlorine taste and odor in tap water, making it more appealing to cats. Quantity: 8, 12, or 16 sets Color: As shown Material: Non-woven fabric Package Includes: - 8, 12, or 16 pet water fountain filters - 8, 12, or 16 blue sponge foam filters - 8, 12, or 16 white sponge foam filters Other items are not included. Note: Screen settings and lighting may cause slight color variation between the image and the actual product. Measurement tolerance is ±1–3 cm.