Finest Filters 4 x Compatible Foam Filter Pads to fit Fluval U3 Range of Internal

Finest-Filters compatible replacement foam filter pads are made from the same material as the Fluval origionals. These filter pads are cut to fit the Fluval U3 range of internal filters The pads measure 195 x 60 x13mm. These sponges contain the boilogical cultures, biologically and mechanically filtering the aquarium water This is not a Fluval Product. This is a Finest-Filters alternative which serves the same purpose as the origional brand.