Pentair Pentek RFFE20-BB Big Blue Water Filter, 20-Inch, Whole House Radial Flow Iron Reduction Replacement Cartridge, 20" x 4.5", Pack of 4

Pentair Pentek RFFE Filter Cartridges are designed to provide an easy and effective method of reducing dissolved iron from water, which greatly improves the taste. This cartridge helps to eliminate the orange and brown stains often found in sinks, toilets, tubs and other plumbing fixtures. It also reduces the possibility of damage to pipes and water heaters and reduces up to 3 ppm dissolved iron. It adds no harmful chemicals to the water, making it completely safe for drinking water applications. The Pentek RFFE20-BB Cartridge is designed for use in the Pentek 20-inch Big Blue Filter Housing and should be installed on the main cold water line after the pressure tank or water meter. For best results, pre-sediment and post-carbon treatment is recommended.

• GREATLY IMPROVES TASTE by filtering up to 3 PPM of dissolved iron. Eliminate metallic taste
• PREVENT RUST STAINS on sinks, toilets and plumbing fixtures and prevent appliance damage
• WHOLE HOUSE FILTERING on main water line, works great for well water
• FITS ALL 20" Big Blue or other heavy duty housings and can replace any 4.5" x 20" Iron reducing filter
• REPLACE EVERY 3 MONTHS for 3PPM reduction with a family of four