Balboa AX40 Overlay [Aux/Black] (17688) gptools Improves replacement fit and operating

Improves replacement fit and operating reliability

6 inch hole size supports intended shell fit

That kind of correct application matters more than it may seem because a spa board needs to do more than fit

The AquaCal AutoPilot soft touch control board is designed for compatible chlorination-system applications where the primary electronic control interface needs replacement

Balboa AX40 Overlay [Aux/Black] (17688) gptools Improves replacement fit and operatingThe Balboa AX40 overlay is designed for compatible auxiliary topside applications where the original graphic control layer needs replacement. An overlay is useful because it helps identify button functions clearly while restoring the finished appearance of the topside panel, supporting easier and more intuitive operation. This replacement is especially useful when the original overlay is faded, peeling, cracked, or no longer legible. Matching the