PTL25P4 filter

Dimensions
Diameter: 121 mm
Length: 302 mm
Top: handle
Bottom: 1½" MPT thread (46-47 mm outside diameter)

Measure the length of the filter excluding the handle and the threaded pipe. Filters from different manufacturers all have slightly different handles. The most common are a cone-shaped handle (Unicel) and a D-shaped handle (Pleatco), but they are all compatible with one another. If the length and diameter match, then this is the correct filter for your spa.

Spa manufacturers who use this filter
Blue Pacific, Charisma Spas, Dimension One Spas, Dolphin Spas, Florida Whirlpool, Freedom Spas, Marathon Spas, OpuSpas, Saratoga Spas, Sundance Spas

Part numbers
Pleatco : PTL25P4
Darlly : SC766 / 40301
Unicel : 4CH-30
Filbur : FC-0141
Saratoga : 74407-98