Pentek - 20" x 4.5" Big Blue Empty Refillable Cartridge Blue And White (F-40500LN-6)0.5 - 5 GPM; 3/8" FPT } The Pro Products 3212000

} The Pro Products 3212000 Resin Mate is an automatic cleaning system that prevents iron and mineral buildup on water softener resin beads

and reduces heavy metals like lead and mercury through both adsorption and redox filtration

OEM "L" shaped valve housing drilled for designer series models

7 kg/cm² endurance

not an aftermarket equivalent

Pentek - 20" x 4.5" Big Blue Empty Refillable Cartridge Blue And White (F-40500LN-6)0.5 - 5 GPM; 3/8" FPT } The Pro Products 3212000Pentek 20" x 4. 5" Big Blue Empty Refillable Cartridge Custom filtration media housing for tailored water treatment solutions 20" x 4. 75" Dimensions Refillable Design Big Blue Compatible The Pentek 20" x 4. 5" Big Blue Empty Refillable Cartridge lets you build custom filtration solutions with your choice of media. Fill it with activated carbon, KDF, calcite, ion exchange resin, or specialty blends to address your specific water quality challenges.