Attop 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 5 Micron, Pack of 1, White

For those who value the safety of household drinking water, removing sediment, sand, and impurities from water is the first step to ensuring water quality. This dual-gradient sediment filter cartridge, with 100% polypropylene (PP) material as its core and a scientific gradient filtration structure, is specifically designed to reduce fine sediment in household drinking water. It not only protects drinking water health but also prevents downstream appliances from being worn by impurities. Compatible with 20-inch large filter housings, it becomes a "reliable frontline" for household water treatment systems. Dual-Gradient Filtration, Efficient Impurity Retention: The cartridge adopts a unique "outer loose, inner tight" gradient density design, with filtration density increasing from the outer layer to the center. The outer layer first traps large particles like sand and silt, while the inner layer accurately captures fine particulates. This avoids clogging the cartridge center with impurities, improving filtration precision (5 microns) and increasing dirt holding capacity to 3 times that of ordinary cartridges of the same size. It extends service life while ensuring stable filtration performance, eliminating the need for frequent replacements. High-Flow Design, Suitable for Household Scenarios: As an ideal "pre-filter," it features high flow rate, so filtration does not affect the speed of daily household water use. Whether washing vegetables or making soup in the kitchen, or washing in the bathroom, it maintains smooth water flow. Specifically designed for 20-inch "Big Blue" filter housings (or other heavy-duty filter housings), its dimensions of 4.5 inches in diameter, 4.5 inches in width, and 20 inches in height can directly replace sediment cartridges of the same specification. No additional modification is needed for installation, making it compatible with most household central water treatment systems. Regular Replacement, Long-Term Protection: It is recommended to replace it every 6 months, or promptly when a drop in water pressure or deterioration in water quality is noticed. Timely replacement ensures the cartridge is always in optimal filtration condition, preventing bacteria growth from accumulated impurities or reduced filtration efficiency. With a lightweight net weight of 1.81 pounds, replacement requires no effort—one person can operate it easily, providing continuous protection for household water quality.