Description is below picture.
Three pack of replacement filter cartridges for the Hagen Dog-It Fresh & Clear Drinking Fountain. (Arcata Pet stock #12509)
These dual functioning replaceable filters mechanically filter out debris, food and sediment. The activated carbon chambers help reduce bad tastes, odors and absorb other impurities present in tap water.
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Visit Manufacturer's website: www.hagen.com
Dog-It Fresh & Clear Replacement Filters 3 pk