4 pcs RO Reverse Osmosis pre filters. All filters are Premium NSF Certified. This set is used as a mid year replacement set (depending on water usage and quality) where a replacement membrane is not needed. Replacement membrane is usually replaced once a year while your pre and post filters can be changed 2-4 times per year (depending on water usage and quality). This universal set s compatible with all major RO Systems with standard size housing. Stage 1 is a 5 micron Polypropylene (Poly Spun) Sediment Filter, Stage 2 is a UDF Coconut Shell Carbon filter, Stage 3 is a 5 micron Coconut Carbon Block filter, Stage 5 is a GAC Polishing Inline filter with 1/4" NPT Ports. This set is compatible with APEC, iSpring, Express Water, US Water RO Systems, US Water Galaxy, US Water Aquapurion, Watts 5 stage systems, Purevalue, Nelson, Isopure, Tier1, Hydronix, Max Water Systems, AQUARIUM, Titan Water Pro, Home Pure, Premier Water System, Blue Wave, and all standard 5 stage RO Systems. Also Compatible With:, 5EZ50, GTS-550S, NRO05-50, 200-GX-5050, ISO-RO5, GTS-550, Tier1 RO5-WF, RO550-W, W-525, and Many More.
Compatible with all standard 5 stage RO Systems and
US Water RO Systems
US Water Galaxy
US Water Aquapurion
Watts 5 stage systems
Purevalue
Proline Plus
Proline Gold
Purenex RO
Pure Pro
Nelson
Isopure
iSpring
Tier1
Hydronix
Max Water Systems
AQUARIUM
APEC
Titan Water Pro
Home Pure
Premier Water System
Blue Wave
Water COP
5EZ50
GTS-550S
NRO05-50
200-GX-5050
ISO-RO5
GTS-550
Tier1 RO5-WF
RO550-W
W-525
WP5-50
RCW5