Polypropylene replaceable filter for pre-filter housings for cold water Aquaphor Gross 20 (and other manufacturers standard BB 20" / BigBlue 20") at 20 microns. Effectively retains water-insoluble impurities such as sand, rust, silt and other sediments.
The gradient structure increases the capacity to retain mechanical particles, thus extending the life of the filter.
What is a gradient structure?
The dirty water flows from the outside of the filter to the center. The mechanical particles contained in it are retained in the micropores, the diameter of which decreases towards the inside. Large particles are retained on the surface of the filter (the outer part), while finer ones are retained in the deeper layers. This increases the filtering area, performance and service life of the filter.

• Replacement: no less than once every 6 months;
• Size: 510±1 x 110±0.5 mm;
• Maximum flow: up to 60 liters/min;
• Maximum operating temperature: + 38 °C (100.4 °F).