These Cartridges are manufactured from a durable polypropylene cord that is wound around a rigid polypropylene core. They are an economical solution to reduce fine sediment including sand silt rust and scale particles.These string-wound cartridges are capable of withstanding temperatures up to 165 degrees F and will accommodate flow rates between 7 and 10 GPM with minimal pressure drop.5 Micron: Normal Household usage

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