19in Vented Adj Depth Sliding Rack Shelf The UNISLDSHF19 19in Vented Adjustable Mounting Depth Sliding Server Rack Cabinet Shelf offers a simple way to install non rack mountable equipment into a server cabinet or open server rack. This TAA compliant product adheres to the requirements of the US Federal Trade Agreements Act (TAA), allowing government GSA Schedule purchases. Offering a weight capacity of up to 50 lbs (22. 7 kg), the sliding rack shelf features a ventilated, cold-rolled steel shelf on two locking adjustable rails which allow the shelf to be installed into cabinets or racks with mounting depths from 20in (510mm) to 30in (744mm). The locking feature locks the shelf 3/4 of the way out, preventing the shelf from accidentally falling out of the rack or sliding back in before maintenance is complete. Backed by a StarTech. com lifetime warranty.