【Premium Quality】: PLEASE NOTE Cat Fountain Filters, Dog and Pet Fountain Filters are for sale 4 pieces filled with activated carbon Dimensions: 5.12 x 0.4 inches. 【Material】: The filter of the cat water dispenser is made of high quality cotton and high quality activated carbon. 【Replacement frequency】: The high quality activated carbon filter of the fountain must be replaced every 2-4 weeks depending on frequency of use. 【Compatible】: This cat and dog water dispenser filter is compatible with pet flower water dispensers and other brands of pet flower water dispensers.
