Compatibility: Replacement filters are compatible with 3L With Filter, 3.6L, 4.67L, 6L, and 8L automatic pet waterers. We offer a 12-month replacement guarantee and 24-hour customer supportplease anytime. Triple Filtration System: The pet water dispenser filter features a 3-layer filtration system. High-density filter cotton traps hair and sediment. Activated carbon removes chlorine and odors while preserving essential minerals. Ion exchange resin helps reduce heavy metals. Ensure Health: This filter effectively captures hair and impurities to keep water clean. It reduces heavy metals, removes chlorine and odors, softens hard water, and improves taste for pets. Clean water may help reduce the risk of urinary tract infections. Warm Tip: Filters are packaged in a reinforced paper box. Before installation, soak and rinse the filter under running water. Replacement Frequency: For optimal performance, replace the filter every 30 to 45 days. More frequent changes may be needed for multi-pet households. Material: Carbon fiber Color: White Package Contents: 8 x Replacement Filters Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.