LTWHOME Foam Sponge Filter Set Fit for Hozelock Bioforce 4500 Filter (Pack of 3 Sets) Custom designed and manufactured for

Custom designed and manufactured for Eheim 6664 Prefilter

Custom designed and manufactured for Eheim Professional 2222/2224/2322/2324 and Experience 150/250/250T filtration systems

Custom designed and manufactured for RaGuRaGu Power Filter M

Package Include: 12pcs replacement foam filter

They are just Activated Carbon impregnated foam

LTWHOME Foam Sponge Filter Set Fit for Hozelock Bioforce 4500 Filter (Pack of 3 Sets) Custom designed and manufactured forEach set have 3 foams ( 1 x fine, 1 x Medium, 1 x Course) Foam Each Size : 198mm diameter and 50mm (2") thick Enhances biological filtration ,Good for freshwater & saltwater environments Custom Designed and Manufactured for Hozelock Bioforce 4500 Filter