RF-9999 Faucet Mount Water Filter for Faucet Filtration System, NSF, 2/4/6 Pack
NSF Certified & Efficient Filtration. Perfect Fit: Compatible with all PUR, PUR PLUS faucet water filter systems (classic, advanced, vertical & horizontal), including FM3700, PFM400H, PFM350V, PFM100B, FM4000B, PFM450S and more.