HEAVY DUTY STORAGE SOLUTION: Designed to support up to 300 lbs (136 kgs) of equipment, this shelf is perfect for storing large, non-rackmount electronic devices and peripherals in your server rack. VENTED DESIGN FOR AIRFLOW: The vented surface improves airflow, helping to lower temperatures in your cabinet and maintain the performance of your equipment. COMPATIBLE WITH 2POST RACKS: This 2U center-mount shelf is compatible with most standard 19' EIA 2Post racks and fits round, threaded, and square rack holes. DURABLE STEEL CONSTRUCTION: Made from high-quality 14 GA cold-rolled steel, the solid rivet construction ensures durability and longevity, even with heavy loads. VERSATILE MOUNTING OPTIONS: The shelf can be mounted upside down for additional flexibility and is compatible with 3' uprights. Transport and seismic options are available for more demanding installations.