We know this filter fits the following makes of hot tub.
It is hard to keep up with all the manufacturers changes so it could also fit makes not shown here.Nordic Spas Roto Spa Sunrise Spas
|Filter Diameter Measurement (cm)||13cm (5 1/8")|
|Filter Length Measurement (cm)||26cm (10 1/4")|
|Filter Top Finish||Handle|
|Filter Bottom Fitting||Coarse 3.8cm (1 1/2") FEMALE SAE Thread|
|Filtration Area (sq ft)||35 sq ft|