PSD90P4 filter / Sundance

Dimensions
Diameter: 178 mm (7")
Length: 483 mm (19")
Top: 64 mm (2½") hole
Bottom: 1.5" MPT screw thread (38 mm outside diameter)

Manufacturers who use this filter
Sundance Spas : Solo and Togo hot tubs

Part numbers
Pleatco : PSD90P4
Unicel : 7CH-90
Filbur : FC-2770
Sundance Spas : 6540-487