This is the top-shelf Chlorine Grabber with a pore size of only 0.5 micron! This carbon block should be preceded by a sediment filter of 1 micron or smaller.  Made with  a polypropylene wrap, end caps, and protective netting with neoprene gaskets.  All materials are NSF certified.  Chlorine capacity varies by the size of the carbon block:

• 10" x 2.5"   20,000 gallons @ 0.75 gpm
• 20" x 2.5"   45,000 gallons @ 2.3 gpm
• 20" x 4.5"   150,000 gallons at 4 gpm

Higher chlorine capacities will be realized with slower flow.  For reference, flow through a 75 gpd RO system with a 4:1 waste water to purified water ratio (20% recovery) is approximately 0.3 gpm. 

Alternate Part No.:  H00994 (20" x 4.5")