Pleatco: PSG25P4 | Unicel: 4CH-20 | Filbur: FC-0185 • Diameter: 4 3/4" • Length: 6 1/2" • Top: Handle • Bottom: 1 1/2" MPT Threaded • Filter Area: 25 sq ft • Filter Material: reemay (3 oz/yard) Alternate Filter Names: 20241-238 | 04-09043 | PSG 25 | PSG25 | PSG25 W/ PAD-4 | PSG25N Used in pools / spas made by: DM Industries | Ft. Wayne Spas | Hercules Spas | Master Spas | Saratoga Spas | Softsider Spas | Vita Spas and other manufacturers