4 x Fluval U3 Compatible Plain Foam and 4 x Compatible Polycarbon Filter Cartridges

You are buying a set of 4 compatible plain filter foams and 4 x compatible polycarbon filter cartridges to fit the Fluval U3 internal filter.

The plain foams are responsible for mechanically filtering the water by removing large particulate waste.

The polycarbon filter cartridges have a polyester side for mechanical filtration of finer particles, and a carbon impregnated side for chemical filtration of the aquarium water.

Regular replacement of the filter foams and cartridges in your filter will ensure that your filter is running at its best.

Size (mm): 195 x 60 x 13