AC-1405 is a compact aluminum chassis enclosure designed for electronic equipment housing and component mounting. It features Type C configuration with external dimensions of 6.0 inches (length) × 4.0 inches (width) × 1.5 inches (height), constructed from 0.040-inch gauge aluminum with a natural finish. The chassis includes mounting holes that accept size #8 sheetmetal screws, with optional provisions for bottom plates (0.136 inch diameter holes) and mounting brackets (0.219 inch diameter holes). Weighing 0.250 pounds, this enclosure is ideal for compact instrumentation, control systems, and electronic device packaging where space efficiency and lightweight construction are required.