Oase Prefilter Foam Set 6 Biomaster / Thermo 45ppi

Suitable for the following Oase Filters: BioMaster 250, BioMaster 350, BioMaster 600, BioMaster 850, BioMaster Thermo 250, BioMaster Thermo 350, BioMaster Thermo 600, BioMaster Thermo 850