Filbur Sta Rite Grid Pack [S8D110] [53 SqFt] (FC 9899) aandamfg Proper matching matters because the Proper matching matters because the wet end needs to preserve the original geometry of the pump and the discharge path if the finished repair is going to feel correct Bottom manifold and outlet assemblies help direct internal filter flow and support efficient water movement through compatible systems This type of product is especially useful when replacing the full internal grid group is more efficient than addressing individual worn sections A grid pack helps renew the complete internal filtration surface inside a compatible diatomaceous earth filter