Filbur Pentair/Hayward/WW Diatomaceous Earth [DE] Grid [Partial] [18" x 9-3/4"] [36 SqFt] (FC-9430) manifolds That matters because visible jet

That matters because visible jet parts contribute heavily to the perceived quality of the spa interior

When the wet end begins to wear out

Helps maintain steady background water circulation

Retrofit design

Replacing the internal diverter can be a more targeted option than replacing the entire valve

Filbur Pentair/Hayward/WW Diatomaceous Earth [DE] Grid [Partial] [18" x 9-3/4"] [36 SqFt] (FC-9430) manifolds That matters because visible jetA partial DE grid helps complete the internal filtration surface of a compatible diatomaceous earth filter assembly, and this Filbur FC 9430 grid is designed for Pentair, Hayward, and WW applications in an 18 inch by 9 3 4 inch format for 36 square foot systems. When a partial grid becomes damaged or worn, the filter can lose the even support it should provide across the grid set. The Pentair, Hayward, and WW compatibility, 18 inch by 9 3 4 inch