Pleatco: PAS50SV-F2M Unicel: 6CH-502 Filbur: FC-0311 • Diameter: 6 3/4" • Length: 8" • Top: Handle • Bottom: 2" MPT Threaded • Filter Area: 50 sq ft • Filter Material: reemay (3 oz/yard) Used in pools / spas made by: Artesian Spas | Majestic Industries and other manufacturers