3M Filtrete Whole House Sump Filter System, Basic: * Filters water throughout your home, saving plumbing and appliances from sand, sediment, silt and rust * Large capacity filters are recommended for 3 or more bathrooms * Systems come with a 3 month sediment filter and can be replaced with Filtrete Standard Capacity Whole House filters * Universal filter replacements are available in pleated, string wound, carbon wrap and grooved filters * Basic filtration * 3-month filter * 25 microns