Pentair Pentek ECP20-20BB Big Blue Sediment Water Filter, 20-Inch, Whole House Heavy Duty Pleated Cellulose Polyester Replacement Cartridge, 20" x 4.5", Blue End-Cap, 20

Pentair Pentek ECP Series Cartridges are manufactured from a special formulation of resin-impregnated cellulose and polyester fibers. This unique blend of materials provides a higher wet strength than regular cellulose cartridges. It also provides high flow rates and dirt-holding capacity while maintaining extremely low pressure drop. The media is pleated around a polypropylene core for added strength. The pleated endcaps of the standard cartridges are immersed in a thermo-setting vinyl plastisol. The Big Blue cartridges have a molded endcap with gaskets. The pleated ends are sealed to the endcap with a thermoplastic adhesive. The overlap seam is sonically welded to reduce internal bypass, improving filtration efficiency. ECP Series Cartridge endcaps feature a color-coding system for easy identification of micron ratings: tan (1 micron), white (5 micron), blue (20 micron), and yellow (50 micron)

• KEEP YOUR WATER CLEAN and protect your appliances by removing dirt, sand, silt and particulates
• FITS ALL 20" Big Blue housings and can replace any 20" x 4.5" heavy duty sediment filter cartridge
• LONGER LIFE with 33% more dirt holding media than many competitors
• STRONGER than standard cellulose cartridges with a unique blend of resin-impregnated cellulose and polyester
• REPLACE EVERY 6 MONTHS or when you notice a drop in water pressure or quality. The cap is color-coded for easy replacement