Note: this product is comptatible with two versions of the water dispenser for cats, as indicated in the product back: for distributors 55600 and 50053 models (the 50053 is sold by Amazon under the name "Fountain Catit Cat Compact 2 L" )
Do not forget after opening the bag to go under water to remove excess carbon particles, and place the filter with the white side up and the coal side down (the water must first pass in coal)