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The white HMI frame is the bezel or housing that surrounds the human-machine interface on a boiler or burner control panel. This frame provides a clean, finished look while protecting the display and buttons from dust and damage. As part of burner spare parts, it is often needed when upgrading or repairing the control interface. A white HMI frame can refresh the appearance of your heating equipment and ensure the HMI remains securely mounted. It is a cosmetic and functional component that contributes to the overall usability of your system.