The Firsle SW series double-layer horizontal filter sand cylinder is an efficient water treatment equipment designed specifically for commercial applications. It combines double-layer filtration technology with the characteristics of commercial equipment, providing stable and reliable water quality filtration and purification solutions for commercial places such as large swimming pools, water parks, hotels, fitness and swimming clubs. The double-layer design enables the filter sand tank to have higher filtration efficiency and stronger processing capacity. By using two layers of sand with different particle sizes, impurities, suspended solids, and particulate matter in water can be more effectively removed, ensuring the clarity and hygiene standards of water quality. This design not only meets the high flow water treatment needs, but also extends the service life of the sand tank, reduces the frequency of sand replacement, and lowers maintenance costs.