Perfect Match - Charcoal water fountain filters compatible with Aookupett, LEXVSS cat water dispenser, and other pet water fountains that use the same size. Great Package - Bulk 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). Large packaging meets your replacement needs. Premium Quality - Each pet fountain filter is composed of activated carbon, ion exchange resin, and non-woven fabric. They can filter hair, heavy metals, and improve the taste of the water. Frequency of Replacement - Replacement carbon filters should be changed approximately every 2 to 4 weeks to maintain water freshness (depending on the size and number of pets using the fountain). Recommendations - To prevent activated carbon dust (which is not harmful to pets) from shedding into the water, please soak the filter in water for 2 minutes and rinse thoroughly under running water before use. Improved Taste - Filters reduce the taste and odor of chlorine found in tap water, which can make the water more appealing to cats. Quantity: 12 Set / 16 Set / 8 Set. Color: As shown. Material: Non-woven fabric. Package Contents: 12 x Pet Water Fountain Filters, 12 x Blue Sponge Foam Filters, 12 x White Sponge Foam Filters / 16 x Pet Water Fountain Filters, 16 x Blue Sponge Foam Filters, 16 x White Sponge Foam Filters / 8 x Pet Water Fountain Filters, 8 x Blue Sponge Foam Filters, 8 x White Sponge Foam Filters. 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 may vary by +/- 1-3 cm.