Balboa AX40 Overlay [J1/J2/J3/J4] (11823) complete kit Ideal for rebuilding worn ball

Ideal for rebuilding worn ball valve systems instead of replacing everything

That makes the repair feel refined and balanced rather than overly bright or mismatched

Supports dependable filtration and cleaner performance

Useful for shutoff and isolation in compatible slip-plumbed systems

When the spa is no longer heating the way it should

Balboa AX40 Overlay [J1/J2/J3/J4] (11823) complete kit Ideal for rebuilding worn ballThe Balboa AX40 overlay is designed for compatible topside control applications where the original graphic button layer needs replacement. An overlay is useful because it helps clearly identify the available control positions while restoring a cleaner finished look to the panel surface. This replacement is especially useful when the original overlay is faded, peeling, cracked, or no longer easy to read. Matching the correct J1, J2, J3, J4 layout helps