1U Vented Shelf 20in - 19" compliant 1U 20" deep server rack cabinet shelf for a universal fit in any EIA/ECA-310 server/AV rack and includes mounting hardware - Vented rackmount cantilever tray improves airflow around devices on the shelf and within the rack - The durable shelf is easy to install and it's constructed of durable 16 AWG SPCC commercial cold-rolled steel for up to 55lbs - For modems routers Wi-Fi access points and other IT/network/telco equipment that can't be mounted or to store tools/supplies. This product ships in approximately 1 days