Brondell RF-40 Membrane Water Filter Replacement for Circle Under Sink Reverse Osmosis Filtration System, Lasts 24 Months

Price: $89.99
(as of Feb 09, 2026 21:00:23 UTC – Details)

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CRYSTAL CLEAR BENEFITS: The reverse osmosis membrane filter separates clean water molecules from contaminants and reduces heavy metals, cysts, fluoride, arsenic, industrial chemicals, and more
WATER QUALITY ASSOCIATION CERTIFICATION: Holds WQA certification for reduction of 64 contaminants when used with the Circle Reverse Osmosis Under Sink Water Filtration System (certified under NSF/ANSI standards 42, 53, 58, and 372)
SIMPLE DIY INSTALLATION: The replacement filter can be installed in just a few minutes with a quick and easy twist and seal installation; The change indicator lets you know when a new filter is needed; Includes filter indicator replacement battery
We design hygiene products that help protect our planet’s essential resources. From water-saving showers and air purifiers to bidets that help reduce toilet paper and energy use, we’re helping you live more sustainably and it feels better already.