POOLPURE Spa Filter for Hot Tub ????. Compatible with Pleatco PRB50-IN, PRB501N, Unicel C-4950, Filbur FC-2390, Dynamic 03FIL1600, 50 sq. Features ?. Poolpure filter is tested and certified by IAPMO against NSF/ANSI 50 for safe and eco-friendly material.
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