Replacement iSpring RCS5T Water Filter Cartridge Kit. Quantity: 5 Activated Carbon Block Filter, 5 Polypropylene Sediment Filter, 5 Granular Activated Carbon Filter, 5 Inline Filter Cartridge Denali Pure Universal 10 inch filter for iSpring #RCS5T – Commercial RO 500 GPD Tankless Side-Flow Reverse Osmosis Water Filter Universal 10 inch Inline filter cartridge. Improves taste and clarity while retaining beneficial nutrients by reducing chlorine, fine sediment, odor, silt, rust. Removes undesirable and possibly harmful waterborne contaminants, particles, chemicals and microorganism.