APEC Ultimate high capacity pre-filter set is USA made and built to last 2x longer than other brands
Includes (1) sediment and (2) carbon block filters to protect and extend the life of the RO system
1st stage Polypropylene sediment filter to remove dust, particles, and rust
2nd & 3rd stage extruded carbon block filters to remove chlorine, taste & odor
High performance replacement filters are compatible with all standard sized under counter RO systems