Under-sink replacement match
Brondell Coral three-stage under-counter replacement filter set
Part UF-35 for select Brondell filtration systems, including UC300.
UF-35 research summaryBrondell identifies UF-35 as the three-filter replacement set for the Coral UC300. The Coral UC100 uses a different single-cartridge replacement. Confirm current compatibility with the manufacturer before ordering.
Systems listed in our guide
UF-35 is associated with the Brondell UC300 system in our research. Open the model page to see every replacement associated with that system, then confirm with the manufacturer.
Filters and stages included
This listing covers the following components. Confirm the quantity, stage order, and part labels shown in the current manufacturer listing before ordering.
- Stage 1 sediment filter
- Stage 2 pre-carbon filter
- Stage 3 carbon-block filter
A complete kit does not mean every stage is due at the same time. Use the system manual’s schedule for each component.
Replacement schedule for UF-35
Every 12 months or 600 gallons. Treat this only as general product guidance and follow the system manual. Water quality, usage, pressure, and sediment can change actual filter life.
Reduced flow, unfamiliar taste or odor, or the system’s filter indicator may signal that replacement is due sooner than the stated maximum.
How to avoid ordering the wrong filter
- Confirm the system label includes the complete model, including every dash and suffix.
- Compare the installed part number with UF-35.
- Confirm the cartridge head, locking tabs, and connection style.
- Do not rely on cartridge color, dimensions, or product photography alone.
Brondell identifies UF-35 as the three-filter replacement set for the Coral UC300. The Coral UC100 uses a different single-cartridge replacement.
After installing the replacement
Follow the system manual, restore the water supply slowly, inspect every connection for leaks, and flush the new filter using the manufacturer’s specified volume before drinking the water.
If flow remains low, water tastes unusual, or a leak appears, shut off the supply and recheck the cartridge alignment, seals, tubing, and complete part number. Seek qualified help when needed.
How this entry was researched
We used the named manufacturer’s replacement information as the primary compatibility reference. Retailer descriptions are a purchasing aid, not our source of truth, and this research does not guarantee fit.
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