This 2-post server rack shelf is designed to fit any 19-inch server rack and features adjustable mounting brackets that can be adjusted to accommodate different post depths. With an internal depth of 20", this non-vented shelf adds a high-capacity mid-mount fixed shelf to almost any 19" rack and is designed to accommodate larger data and networking equipment. Constructed with SPCC commercial grade cold-rolled steel, this center mount double-sided rack tray can support up to 75 lb. (34 kg). This 2U fixed rack cantilever shelf features a very compact form factor, making it ideal for non-rackmount equipment, tools, and peripherals. StarTech.com offers a lifetime warranty and free lifetime technical support on this relay rack shelf.