1. Multi-Model Compatibility - Fits various pet water fountain models (compatible models shown in product images). Confirm compatibility with your device before purchase.
2. 4-Stage Filtration System - High-density microporous filter cotton-ion exchange resin-coconut shell activated carbon-high-density microporous filter cotton. Effectively removes impurities, odors, and heavy metals.
3. Optimal Replacement Frequency - Replace every 2-4 weeks to maintain peak filtration performance and water freshness.
4. Pre-Use Instructions - Rinse new filter under water and soak for 10 minutes before initial installation to activate materials and remove residues.
5. Dimensions - Outer diameter: 12.7cm; center hole diameter: 3.8cm.