The Culligan S1 filter is a 20 micron sediment water filter designed to reduce sand, sediment, silt, rust particles, and scale particles. The S1 filters have pleated walls for high dirt-holding capacity. The Culligan S1A water filters are recommended for chlorinated water supplies, but NOT for wells. The Culligan S-1 water filter media is pleated around a polypropylene core for added strength and the ends are immersed in a thermo-setting vinyl plastisol. It also has an external netted sheath that helps retain uniform pleat spacing in high flow and pulsating flow streams. The overlap seam is sonically welded to reduce bypass, improving filtration efficiency. Replace the Culligan S1 approximately every 4 months or 16,000 gallons of water. The filter change interval also depends on your water supply and water usage.
