Popular Slim 5 Series rack frame system meets a wide range of project requirements with a strong steel construction and wide open access for easy integration. The Slim 5 Series ships ready-to-assemble. 43RU and 26" (660mm) depth. Lightweight, open design is easy to work with. Bolt-together design allows for flat shipment via UPS. Unique interlocking corner joint for exceptional strength and easy assembly. Accepts removable steel side panels for security and control airflow. Top includes two laser knockout locations to mount cooling fans. Standard front and rear fixed 10-32 threaded rack rail with marked spaces.