20" Carbon Block Water Filter Cartridge. Filters levels of chlorine and other chemicals, ideal for use with reverse osmosis pre-filtreation, aquarium / koi pond dechlorination, fish keeping, water fed pole filters, and so on.
Fits standard sized 20" filter housings, cartridge diameter is 2 1/2".
5 Micron rating (filters sediment particles) CTO water filter cartridge.;