Pioneer Pet Replacement Filters for Ceramic and Stainless Steel Fountains, 6-Filters (Quality Improved!) Premium qulaity of 6 replacement water filters designed by NISPIRA compatible with Pioneer Pet Ceramic Fountains, Pioneer Pet Stainless Steel Fountains, Petco Premium Ceramic Fountains It helps to capture hair, debris and odor from the water 3 layer filtration system includes the activated carbon and Duo-Density Polyester Pads Not in retail package. Suggested to replace the filter 2 - 4 weeks Product Dimensions:  H x 4 W x 2  D. Quality meets or exceeds leading national brands.