The BUD Industries CU-3243-MB is a durable and versatile black thermoplastic utility box with bracket mounts. This external mounting box measures 4.21 x 2.8 x 1.1 inches, while the internal dimensions are 3.96 x 2.61 x 0.9 inches. The compact size makes it ideal for a variety of electronic and electrical applications, providing protection and organization for components. The bracket mounts offer easy installation options, making this utility box a convenient and reliable choice for your projects.