<p>Faucet Filter Replacement for Pur Rf-9999 and Rf-3375. If You Encounter Any Problems During Use, Please Feel Free to Contact Us, We Will Solve It for You at First Time. Replacement for PUR Faucet Filter: Glacier Fresh water filter rf-9999 are made from coconut activated carbon. Activated carbon are 'heat treated' with steam. This produces pores within each grain of carbon, creating tiny tunnels and spaces that absorb organic compounds and pollutants. The premium carbon filter is certified to reduce chlorine (taste and door) and many contaminants including 99% of lead and rust, sand, etc. Compatible with all Pur Faucet Mount Filtration Systems: Compatible with PUR faucet mount replacement filter RF-3375, RF-9999, PFM100B, PFM450S, FM-3333, FM-9400B, FM-3700B, FM-2000B, FM-4000B, FM-4100B, FM-2500V, FM-3400B, PFM350V, WD-RF-9999 , FM-9000B advanced plus faucet water filter and more. Filtration life: Faucet filter for PUR water filter can be used for 3 months or 100 gallons. To achieve the best filtration effect, please release cold water for 5 minutes after installation. More economical: For RF-9999 replaces the water filter, with a capacity equivalent to 800 bottles of 500 ml mineral water, while improving the taste and providing environmental protection for the ecological environment.</p>