Hammond 1590BBK Black Diecast Aluminum Enclosure -- Inches (4.39" x 2.34" x 1.06") mm (112mm x 60mm x 27mm) Rugged, diecast aluminum alloy (tough - yet easy to machine), electronic instrument enclosure. Inches (4.39" x 2.34" x 1.06") mm (112mm x 60mm x 27mm) Lap joint construction provides protection against access of dust and splashing water. Also provides for improved EMI/RFI shielding. Designed to meet IP54 (or IP66 if gasket is also purchased) Satin black painted version is painted with tough polyester powder paint for a lasting finish, even after machining. Black screws are included to enhance appearance.