Aluminum NEMA 4X Box: ANS Bud Industries' heavy-duty die-cast Series ANS Aluminum NEMA 4X Box is designed for sensitive electronic applications requiring EMI/RFI shielding, as well as protection from water, oil, dust, and other contaminants. With a one-piece molded outer silicone gasket meeting IP65 requirements, the captive cover screws securely outside the sealed area. The box is ideal for instrumentation, meters, junction boxes, and industrial applications.