Omnipure - E5421-P - 8" x 2.5" E-Series 10 Micron Carbon Block, Phosphate Filter - Scale Inhibitor Choose:Single 5 inch Big Blue housing

5 inch Big Blue housing from Watts

resistivity

Hold function locks readings

and most industry-standard 20" housings

Omnipure - E5421-P - 8" x 2.5" E-Series 10 Micron Carbon Block, Phosphate Filter - Scale Inhibitor Choose:Single 5 inch Big Blue housingOmnipure E Series 10 Micron Carbon Block Filter with Phosphate Scale Inhibitor The E5421 P combines chlorine reduction with active scale prevention in a compact 8" inline format, designed for easy tool free installation in residential and commercial applications. 10 Micron Carbon Block Scale Inhibitor Easy Change Caps WHY IT WORKS Dual action filtration and scale prevention in one cartridge Carbon Block Structure Compressed activated carbon at 10