UNIVERSAL 19'' FIT: This 1U server rack mount shelf is designed to fit EIA-310 compliant 19in server racks and can accommodate an internal depth of 20in (50.8cm) for your data, IT, networking, or equipment from brands like APC, Dell, Lenovo and HPE DURABLE DESIGN: Constructed with 2.0 mm thick SPCC commercial cold-rolled steel, the sturdy front mounted cabinet shelf ensures durability and supports a total weight of 55 lbs (25 kg) making it the perfect rack shelf for any environment FLEXIBLE INSTALLATION: The rack mount cantilever shelf can be mounted in 2 orientations, install the shelf with the front shelf lip downwards or mount with the lip upwards to prevent your computer, AV or other equipment & accessories from sliding off EASY ACCESS: The shelf can be used for modems, routers, Wi-Fi access points, and other IT/network/telco equipment that can't be mounted on a rack or to store and access frequently used tools and supplies STARTECH.COM ADVANTAGE: IT professionals’ choice for over 30 years, this 1U solid server rack shelf is backed for life by StarTech.com, including free lifetime 24/5 multi-lingual technical assistance