Robust electronic instrument enclosure made from aluminum die-cast alloy, durable yet easy to work with. The two-part tongue-and-groove construction features a replaceable one-piece silicone rubber gasket that provides protection against dust and water ingress. The gasket is supplied loose in the enclosure and is not pre-installed. Ideal for repeated opening and closing. Four recessed stainless steel machine screws secure the lid in the threaded holes.