Integrative Swimming Pool Filter S350 is without machine room and install in the pool wall directly, which is not protruding and coordinated with the surrounding environment. Then can save the land and the cost of building machine room. S350 is without any chemical and environmental friendly. Patented product, and it comes with chlorine dioxide generator (also known as Salt Chlorine Machine). Just need to add certain percentage of salt or sea salt into the pool, then the chloride dioxide generator will electrolysis the salt to be chloride ions to disinfect the water of pool. And it no need to change the water of pool for whole year which is 100% keep away with chemicals, and without any side effect to human. No need backwashing, can save water, and just need to clean the filter bag and remove the dirty of filter. And it need to equip with two filter bags, one for spare, and can use more than two years.