IPW Industries Inc (ISO-4PK) Reverse Osmosis RO 4 Filter Replacement Set Inline Fitting Connection:1/4" NPT Incoming water passes through densely

Incoming water passes through densely packed strong acid cation resin beads inside the 20"x4

Sediment and carbon block filters protect the membrane and polish final water quality for taste and clarity

A connector that's slightly too long is easier to work with than one that's under tension

Service life depends on iron concentration and water volume

Male NPT threading and compact form factor allow flush panel installation for control stations

IPW Industries Inc (ISO-4PK) Reverse Osmosis RO 4 Filter Replacement Set Inline Fitting Connection:1/4" NPT Incoming water passes through denselyThis complete 4 piece replacement filter set restores full filtration performance to standard residential reverse osmosis systems including ISO RO5, ISO RO4DI, W 525, and W 425 models. Each kit includes one 5 micron sediment prefilter, one granular activated carbon (GAC) prefilter, one carbon block prefilter (5 or 10 micron), and one inline post carbon filter for final polishing. SPECIFICATIONS Complete Annual Service Kit Filter Dimensions 10" 2. 5"