The Omnipure OMB934-5M is the 10-inch carbon block replacement element for standard 10-inch filter housings — the workhorse cartridge for under-sink, whole-house, and reverse-osmosis prefilter applications across countless American water installations. Drop-in 2.5-inch outer diameter sized to fit the common 10-inch housing form factor.
Compression-molded carbon block construction at 5 micron filtration produces measurably better performance than loose granular carbon: better contact time, finer particle filtration, and longer cartridge life per gallon of water filtered. NSF certified performance for chlorine, taste, and odor reduction means independent third-party verification of the cartridge’s filtration claims — not just marketing assertions.
For under-sink RO systems running 10-inch standard housings, whole-house pre-filtration setups, and any installation with a standard 10-inch housing, this is the right replacement cartridge. Made in Caldwell, Idaho by Omnipure — America’s long-time inline carbon filtration manufacturer since 1970. Typical replacement interval: 6 months in residential use.
