Replacement Filter Pack for US Water AR-4 Reverse Osmosis Systems
It is recommended that filters be replaced at least every 90 to180 days. Some applications my need more frequent intervals.
- (1) 5 Micron Spun Poly Sediment Pre-filter
- (1) 10 Micron Carbon Block Filter
This is a Standard Factory Replacement Package
Also replaces USCRO-1000, Flexeon AT-500, and Flexeon AT-1000 systems