• Compatible with the BMDSAE H4 cat water dispenser. Check compatibility before purchase. • Includes activated carbon for effective filtration, maintaining fresh water quality. • Four-layer filtration system that blocks hair, dust, and food debris. • Recommended to replace every two weeks to keep drinking water fresh. • The package contains 6 replacement filters and 6 pre-filter sponges. • Product dimensions: 10 cm wide, 10 cm high, and 2 cm long.