Waterdrop G3-series composite pre-filter
G3-N1CFThis is the first-stage composite filter for compatible G3-series tankless systems. It does not replace the RO membrane or carbon-block stage.
Verified system-model match
Replacement filters for Waterdrop G3P400
1 verified replacement option for this reverse osmosis system.
Verified replacement option
Confirm before orderingUse the complete system model, then compare every replacement part number and stage.
Browse reverse osmosis filtersHow to confirm the match
- Confirm the system label says G3P400, including every suffix.
- Compare the installed cartridge or membrane part number.
- Check the stage count and membrane capacity where applicable.
- Follow the manufacturer’s replacement schedule for each stage.
Do not choose a replacement by cartridge appearance alone. Similar housings can use different connections, capacities, or stage combinations.
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