RackSolutions Mini Rack Duo Shelf designed for 19-inch racks in homelab, small studio, or data center environments. The shelf is perfect for virtual systems, server clusters, render farms, and MacOS servers. The shelf mounts cantilever to 4-Post racks and cabinets, or 2-Post relay racks. The shelf features laser cut acrylic cutouts to keep each Mac Mini in place. The 2-Post Mac Mini rack shelf features a passive ventilation system designed to isolate hot and cold aisles in large data center environments. The shelf's front air intake moves cool air from the front and moves it through the lower chamber on the shelf and to the rear of the rack where it is ventilated out along with the Mac Mini's exhaust.