StarTech.com 1U 19.5 to 38in Adjustable Mounting Depth Vented Rack Mount Shelf - 175lbs / 80kg - 27.5in Deep - Add a sturdy adjustable mounting depth (19.5 to 38in) shelf into almost any server rack or cabinet - Vented Rack Mount Shelf - Rackmount Shelf - Fixed Server Rack Shelf - 175lbs / 80kg - 27.5in Deep