This 1U rack shelf lets you add 7 in. (17.5 cm) of flat storage space to any EIA-310 compliant server rack or cabinet. The shelf is vented to improve air flow and help lower temperatures in your rack. Ensure your equipment is secure The durable fixed-rack shelf can hold up to 44 lb. (20 kg) of equipment and is constructed using SPCC commercial-grade cold-rolled steel. Make the most of your available space The 1U cantilever shelf lets you optimize your working space by giving you the ability to mount equipment to your rack instead of taking up desk or floor space. It’s perfect for your SOHO (small office, home office) environment, server room or any other location with limited space available. Customize your setup You can install the 1U vented rack shelf in your rack at any height, giving you a stable surface for placing equipment that’s un-mountable or storing your tools. The CABSHELF1U7V is backed by a StarTech.com lifetime warranty and free lifetime technical support.