Balboa TP540 Overlay [Jets/Light/Temp/Aux] (17351) onoffvalves The 1-3/4 inch hole-size format

The 1-3/4 inch hole-size format helps define the intended shell fit

directly affecting flow strength

Shape-specific gaskets matter in spa jet repairs because the fit of the seal affects how cleanly the assembly goes back together and how complete the rebuild feels once installed

the difference is immediate

Balboa TP540 Overlay [Jets/Light/Temp/Aux] (17351) onoffvalves The 1-3/4 inch hole-size formatThe Balboa TP540 overlay is designed for compatible topside control applications where the original graphic layer needs replacement. An overlay is useful because it helps identify each control clearly while restoring the finished look of the panel, supporting easier user interaction and a more polished control surface. This replacement is especially useful when the original overlay is peeling, faded, cracked, or no longer readable. The Jets, Light,