Aqua Polish #20 Prefiltration Cartridge.

• Reduces: Particulates, Scale Sediment, Sediment, Rust, Foul Tastes, Fibers, Bad Odors, and Chlorine.
• Particle Retention Rating (nominal): 3 Microns.
• Cartridge is 20.1″ from bottom of cartridge to top of nipple
• Fits inside a #20 Pre-Filter housing.