Nominal 5 micron Pentek Pleated Cellulose Polyester Water Filter Cartridges, The Pentek water filter cartridge has a special formulation of resin-impregnated cellulose and polyester fibers, The Pentek water filters provide higher wet strength than regular cellulose cartridges, The Pentek water filters also provide high flow rates and dirtholding capacity, while maintaining extremely low pressure drop, The Pentek replacement filter cartridge has minimal unloading and media migration, The Pentek water filter media is pleated around a polypropylene core for added strength and the ends are immersed in a thermo-setting vinyl plastisol, Embedding and sealing each end of the pleat block in this fashion fuses the components together forming a unitized end cap and gasket, The new ECP water filter cartridges contain more media surface area than most competitive cartridges, The standard 20"" ECP cartridges contain 12 square feet of media, The Pentek replacement filter cartridge is recommended for chlorinated water supplies, It is not recommended for non-chlorinated water supplies, Cellulose may start to break down if there is bacteria present in well water or other non-chlorinated water supplies, Dimensions: 20"" x 2-5/8"" (508 mm x 67 mm), Micron Rating (Nominal): 5 Micron, Temperature Rating: 40F to 125F (4, 4C to 51, 7C), Initial ?P (psi), Flow Rate (gpm): <1 psi, 10 gpm (<0, 1 bar, 38 L/min), Pentek Sediment Filter Materials of Construction:, Filter Media: Cellulose Polyester, Core: Polypropylene, End Caps: Vinyl Plastisol, SKU: CWD1694