RO 5 Micron Chlorine Guzzler Solid Carbon Block Cartridge 5/10 Micron
This is a solid carbon block prefilter for TFC or Hi-S R/O filters. It is the finest carbon filter made and is rated to remove 2 ppm chlorine for 3750 gallons.
It fits units made for Aquarium Life Support Systems.
It also fits units made by CoraLife (Energy Savers Unlimited), Kent Marine, and Seachem.