SINGLE FILTER REPLACES: Pleatco: PVT50W | Unicel: C-8350 | Filbur: FC-3053 • Diameter: 8 1/2" • Length: 7 1/8" • Top: Open Hole: 1 7/8" • Bottom: 2 3/8" Open Hole (Keyed) • Filter Area: 50 sq ft • Filter Material: REEMAY (3 oz/yard)