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 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. These materials help filter out hair, heavy metals, and improve water taste. Frequency of Replacement - Replace carbon filters every 2 to 4 weeks to maintain fresh, clean water, depending on the number and size of pets using the fountain. Recommendations - To minimize activated carbon dust from entering the water (not harmful to pets), soak the filter in water for 2 minutes and rinse thoroughly under running water before first use. Improved Taste - Filters reduce chlorine taste and odor commonly found in tap water, making it more appealing to cats. Quantity: 12 sets 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 Only the above items are included; other products are not part of this package. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.