Pair of PRB25SF-PAIR filters

Dimensions
Diameter: 125 mm
Length: 165 mm (each filter)
Top: 54 mm hole
Bottom: 54 mm hole

Spa manufacturers who use this filter
Several brands including Beachcomber, Catalina, Clearwater, Signature, Sundance, Sunrise and Waterway (Dynamic Series IV)

The price is for a pair of filters, not a single filter.

Part numbers
Pleatco: PRB25SF-PAIR
Darlly: SC732 / 40505
Unicel: C-4405
Filbur: FC-2387
Waterway: 817-5010