Diecast Aluminum Enclosure , 4.39 X 2.34 X 1.06 Key Features: Rugged, diecast aluminum alloy (tough - yet easy to machine), electronic instrument enclosure. Lap joint construction provides protection against access of dust and splashing water. Also provides for improved EMI/RFI shielding. Unpainted version is vibra finished for a smooth surface with no sharp edges.