While the specific spa model requires more information, the 31990-WH skimmer is a generic component from the OEM Balboa Water Group used in various hot tubs.
Manufacturers Using Balboa Components
The 31990-WH is a widely used, generic part, so a comprehensive list of every compatible spa model is not available.
However, many hot tub manufacturers use Balboa Water Group components (control systems, heaters, pumps), including the following brands, one of which may be yours:
Platinum Spas
Cal Spas
Master Spas
Coast Spas
Marquis Spas
Bullfrog Spas (uses Balboa electronics)
H2O
Superior Spas
Acura Spa Systems
Garden Leisure
Skimmer Specifications
The part 31990-WH has standard dimensions to help ensure proper fit:
Skimmer Face Size (W x H): 4" x 9-1/4" (or sometimes listed as 4" x 10-1/2")
Hole Size Required: 2-1/2" diameter
Plumbing Connection Size: 1-1/2" slip (s) connection
