Compatible and Convenient: These 5cm replacement filters are designed to be compatible with Petmate Replendish Mason Gravity Waterers, including 0.5/1/2.5/4 Gallon models. Multiple Filtration: The filters are filled with activated carbon and non-woven fabric, effectively removing impurities, heavy metals, odors, and softening tap water. They help filter out cat hair and food residue for clean and fresh water. Protect Your Pet's Health: Made from safe and odorless materials, these filters are designed to improve water quality, promoting the health of your pet's urinary system and overall well-being. Water Quality: Regular use of these filters ensures your pets have access to fresh and clean water, promoting hydration and reducing the risk of harmful substances in their drinking water. Regular Replacement: To maintain your pet’s health, it’s recommended to replace these filters every 15 days to ensure continuous filtration and optimal performance of the water dispenser., Manufacturer: eMagTech