Generic Full Filter Grid Element for Nautilus/FNS and MicroClear Filters - 48 Square Feet pool-dimensions_12x24 this chair must be ordered

this chair must be ordered in multiples of 10

Because it has no gears

Measure the current pool water alkalinity using a standard test kit

This simple

5 inch cuff and is 45 feet in total length

Generic Full Filter Grid Element for Nautilus/FNS and MicroClear Filters - 48 Square Feet pool-dimensions_12x24 this chair must be orderedThis is a Generic Full Filter Grid Element replacement for 48 square foot FNS Nautilus and ProGrid MicroClear D. E. filter grid elements. This is a full grid assembly measuring 24 inches. This filter element is used in the ProGrid DE4820, MicroClear DE4800, and MicroClear DE 480S Stainless Steel filters. It is also used in Pentair FNS48 Pool and Spa D. E. Filters, Nautilus NS48 and Nautilus Plus NSP48 Pool and Spa D. E. Filters. Also fits Zodiac DEV48