Pentair Pentek RFFE20-BB Big Blue Water Filter, 20-Inch, Whole House Radial Flow Iron Reduction Replacement Cartridge, 20" x 4.5", White

IMPROVES WATER TASTE - Reduces up to 3 ppm of dissolved iron to cut the metallic taste it causes, for cleaner, better-tasting water from well or municipal supplies throughout your home.

HELPS REDUCE RUST STAINING - Helps clear the orange and brown staining that iron leaves on sinks, toilets, tubs and fixtures, and lowers the chance of iron damage to pipes and water heaters.

RADIAL FLOW IRON REDUCTION - Designed for the 20-inch Big Blue housing and installed on the main cold-water line after the pressure tank or meter. For best results, pair with a sediment pre-filter and a carbon post-filter.

FITS ALL 20-INCH BIG BLUE HOUSINGS - Measures 20" x 4.5" and drops into any 20" Big Blue or other heavy-duty housing, replacing any 20" x 4.5" iron reduction cartridge. Adds no harmful chemicals and is safe for drinking water.

LONG SERVICE LIFE - Handles roughly 26,000 gallons at 3 ppm iron, about 3 to 4 months for a household of four, and lasts longer at lower iron levels. Replace when metallic taste or staining returns.