20" x 4-¼" Deionizing Cartridge with USA made Resintech MBD-10-SC resin.
Deionizing resin is normally not able to be regenerated so it is very important that a good quality prefilter system be designed and installed (for your particular water source and flow rate) prior to this filter to prolong its life.
Deionizing water filters are used to remove mineral ions from the water.