This Adjustable Depth Sliding Server Rack Shelf offers a simple way to install non rack mountable equipment into a server cabinet or open server rack. The shelf features a highly ventilated cold-rolled steel shelf on two locking adjustable rails which allow the shelf to be installed into a cabinet or rack with a minimum mounting depth of 20 inch (510mm) to a maximum depth of 38 inch (974mm). 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. Features 1. Includes Mounting screws and nuts2. Meets EIA RS-310-C standards3. Highly ventilated to reduce airflow impedance4. Locking rails prevent the shelf from sliding all the way out5. Supports up to 22.7 kg (50 lb) of equipment6. Constructed from 16 gauge cold rolled steel.