ClosetMaid Mixed Material Storage Furniture Smoky Taupe Metal 4-Shelf Ladder Bookcase (23.62-in W x 70.87-in H x 19.69-in D) in the Bookcases department at Lowes.com
StarTech.com CABSHELF1U 1U 7 in Depth Universal Fixed Rack Mount Shelf - 33 lbs / 15 kg - 1U Rack Shelf - Server Cabinet Shelf - Fixed Rack Shelf - Newegg.com