This sand filter is a highly efficient and environmentally friendly way to keep clean water flowing through your above-ground pool. It's also more cost-effective because the pump uses silica sand instead of a traditional filter cartridge. While those cartridges need to be replaced every 2 weeks, silica sand lasts up to 3 years. The pump works by draining pool water into the filtration system, with a 6-position valve for easy filter control. The sand will trap dirt and debris, but a pre-filter strainer basket catches larger things so that the pump will last longer. The filter also comes with the ChemConnect Dispenser, which maintains clean, healthy pool water by providing a stable level of chlorine.Details:WhiteCompatible with most 300 - 14,400 gal. above ground poolsFor outdoor use