List of spa manufacturers who have been known to incorporate this specific Balboa topside panel or the systems it connects to in at least some of their models:
Aquaterra Spas
Artesian Spas
Cal Spas
Caldera Spas
Coast Spas
Coleman Spas
Dynasty Spas
Emerald Spas
Four Winds Spas
Freeflow Spas
Great Lakes Spas
Marquis Spas
Master Spas
Platinum Spas
QCA Spas
Strong Spas
Sundance Spas
Superior Spas
Thermo Spas
Viking Spas (often uses overlay number 12051 with this panel)
