Buy it Online, a Set Of 3 Filter replacement cartridges for under-sink AO smith reverse osmosis water system.
( The RO Membrane cartridge is not included in this package)
Compatible with WP-5 WP5-50 KP-5 B-RO5N-50, a Reduction rate of 99.9% of bacteria, pesticides, herbicides, and heavy metals from tap water, the main stage in this system is the RO membrane.
It includes three filters and a membrane ( not included )
