Ensure your furry friend drinks clean and fresh water with the Dogness D12 Ultra Filtration Layers Filter 3pcs in Green. These filters feature advanced ultrafiltration technology, effectively removing impurities as small as 0.01 microns with a 99.99% sterilization rate. Designed for the D12 infrared sensing/rechargeable pet water fountain, each box contains 3 filters for convenient replacements every 3-4 months. Keep your pet's water source pristine effortlessly, promoting their health and well-being. Upgrade your pet care routine with this essential green filter set for high-quality hydration.