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 12, 16, or 8 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 supports long-term 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 Guidance – Replace carbon filters every 2–4 weeks to maintain fresh water (frequency depends on number and size of pets using the fountain). Usage Tip – 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: 12-pack, 16-pack, or 8-pack Color: As shown Material: Non-woven fabric Package Includes: - 12 (or 16 or 8) pet water fountain filters - 12 (or 16 or 8) blue sponge foam filters - 12 (or 16 or 8) white sponge foam filters Other items are not included. Note: Screen settings and lighting may cause slight color variation. Measurement tolerance: ±1–3 cm.