The Pentair FNS Plus Filter Series is a proven design with years and years of service in the field. Internally, the filter grids consist of 7 full-size grids and 1 partial, for a total of eight grids. There is a separator on the bottom of the grid assembly, two rods and a top manifold. Additionally, there is a grid location template available.
Chances are, after 5-6 years of service, your grid assembly is beginning to wear. The grids may start to deteriorate internally and grid fabric may rip. If more than three grids are damaged beyond repair, we recommend considering complete grid assembly replacement. We have these grid assemblies in stock and ready to ship.