This adaptor plate is specifically used with the compact Balboa Lite Duplex control panels, which typically have dimensions matching the inside cutout of the plate. Examples of compatible panels include:
Balboa VL401 (Lite Duplex Digital LCD).
Balboa VL403 (Lite Duplex Digital LED).
Spa Manufacturers Using Balboa Parts
The 11109 plate itself doesn't determine compatibility with a specific spa brand, as it's a generic retrofit accessory. However, many hot tub manufacturers use standard Balboa control systems, including:
