Balboa AX40 Overlay [J1/J2/J3/J4] (11823) aquastar Matching the proper capacity matters

Matching the proper capacity matters if you want the spa to perform the way it was originally intended

Supports dependable resealing during light service

A battery is useful because it provides the stored electrical power required for cordless lighting operation

supporting smooth water flow and reliable installation

Proper circulation and pressure require components built for accuracy and durability

Balboa AX40 Overlay [J1/J2/J3/J4] (11823) aquastar Matching the proper capacity mattersThe 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