General description This 8-Piece Pet Fountain Replacement Filter is designed specifically for the 2.5L and 2L stainless steel cat fountains, including the YMYNY model. It features a triple filtration system that effectively removes dirt, hair, chlorine, and bacteria, ensuring clean and fresh drinking water for your pets. Technical specifications Quantity: 8 replacement filters Compatibility: 2.5L and 2L stainless steel water dispensers Usage It is recommended to change the filter every 2-4 weeks, depending on the number of pets using the fountain. Other information All activated carbon filters are rinsed before use to prevent carbon dust from dissolving and entering the drinking water.