Upgrade to 3MFF101 cartridge that will fit in your existing WV-B2 system head and offers Sediment/CTO/Lead/Cyst/Select VOCs reduction at 0.2 micron, 2.5 gpm, and rated for 6000 gallon capacity.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov