High quality 10'' polypropylene solid particle prefilter from ECOSOFT.Removes soil, rust, sediment, microparticles, etc. down to 5 micron. Ideal solids prefilter for all filtration systems and reverse osmosis units.Dimensions: 9 3/4'' (10'') x 2.5''Permeability: 1 micron - Replacement: 3-6 months..