SINGLE FILTER MADE IN THE USA POOL AND SPA FILTER NEW IN FACTORY PACKAGING MEASUREMENTS: Diameter: 8 1/2" Length: 14" Top: 2" SAE (Closed) Bottom: 2 1/2" tapered Filter Area: 85 sq ft Filter Material:Reemay Microban (3 oz/yard) Popular brand part numbers: Pleatco: PSD85-2002 Unicel: C-8380 Filbur: FC-2810 Replaces the following filters: 6540-501 17-175-3235 APCC7357 18007 Sundance MicroClean Sundance Spas and other manufacturers