use in side no HD-950 filter housing to extend life of major appliances or provide clean, fresh drinking water by reducing coarse sand, scale and rust particles (50 nominal micron rating). Also fits Omni, Selecto and Flotec. Durable, non-woven pleated polyester. High-flow rate/low pressure drop capabilities for well water applications. 6-month/24,000 gal life depending on usage and water conditions. NSF International tested and certified.