This is a REPLACEMENT insert for the Oasis green filter system.
Pre – Carbon EZ-Turn filter (034763-201) – For Oasis filters with a green filter head design. Made from coconut shell charcoal. Removes Chlorine, Taste & Odor (CTO). Carbon Filter Tested to the NFS standard 42 — aesthetic effects in taste, odor-chlorine and mechanical filtration.
To be replaced annually.