Unicel-4CH-925 Fine Thread
Filbur-FC-0126 Fine Thread
Darlly-SC728 Fine Thread
Known to fit Strong Spas, Durasport Spas this filter has a fine thread not coarse thread.
Specification – Length – 17.9cm, Dia – 12.1cm. With the top being closed with a handle. The bottom has a fine thread 3.8cm
The Filtration Area = 20 sq ft and Pleat Count = 160.