Compatible Foam Filters Non-branded Suitable for Fluval Edge Filter (Pack of 12) Pack include 12 PCS Of Foam Filter. Foam size:63mm x 55mm x 40mm No BioMax is included in this listing High quality,Performs mechanical filtration! Provides efficient water flow with less clogging for long lasting filtration Enhances biological filtration ,Good for freshwater & saltwater environments After market product,Not Hagen FLUVAL genuine FOAM