Robust, die-cast aluminum alloy (tough yet easy to machine) for electronic instrument enclosures. The overlapping joint construction provides protection against dust ingress and splashes, while ensuring improved EMI/RFI shielding. Includes screws that are screwed into factory-threaded holes. The type and quantity of screws may vary. The standard versions comply with protection class IP54. Waterproof versions meet IP65 and include a gasket. The gasket is supplied loose inside the enclosure (not pre-installed).