SpecificationsOur fountain filter can match all kinds of pet automatic flower fountains. Size: 12.5x3.3cm Keep Your Pet HealthyEach filter is composed of cotton layer, activated carbon and ion exchange resin. They filter hair, heavy metals, improve the taste of water, keep pets drinking clean, fresh water throughout the day, help increase water intake and reduce the risk of urinary tract infections. Quality Improvement- The pet water dispenser filter contains large diameter coconut shell charcoal, which has better purification performance. Our cat water dispenser filters have enhanced adsorption capacity. Environmental FilterThe filter can be replaced in 2-4 weeks, removable and washable, rinse with water for 2 minutes before use.