Finest Filters 8 x Compatible with Fluval Edge Pre Foam Filter Sponges

You are purchasing 8 x Finest Filters Compatible Pre Filter Foams suitable for the Fluval Edge aquarium filter. In order to maintain water flow to the filter, the pre filter foam sponge should be replaced regularly. Black Foam Size (mm): Length: 70mm Outer Diameter: 40mm Internal Hole Diameter: 15mm Wall Thickness: ~ 12.5mm (The amount of foam surrounding the hole)