AC Infinity Vented Cantilever Rack Shelves are designed for supporting non-rack mountable equipment such as routers, models, keyboards, and monitors. Fits into all standard 19 inch racks and cabinets, and takes 1U, 1RU, 2U, or 2RU of space. Vent design maximizes airflow and prevents hot spots, while maintaining structural integrity. Constructed of heavy-duty 2.4 mm thick cold rolled steel with a black powder coated finish.