The Ergotron ABS4835SM-CG AnthroBench II is built like a tank to support 400 lbs in stationary applications, 300 lbs in mobile applications. Integrated cable management organizes and protects cords and cables all along the bench. Weave cords through openings on the support pan of each shelf, and then down channels in the legs. The ABS4835SM-CG AnthroBench II is available in 48" width, 28" depth and 35" height. Make your AnthroBench mobile with optional 5"casters (sold separately). The single-wheel casters have soft rubber thread that moves smoothly over rough surfaces. Comes in set of 4 (two locking and two non-locking). AnthroBench comes with one shelf, two vertical legs with integrated cable management, two base tubes (2.5" diameter), two cross tubes (1.75" diameter), and four threaded leveling glides. Shelves are made of 1.25" thick, medium-density fiberboard with durable, seamless thermoplastic laminate. Front edges feature rounded bull-nose finish for comfort. Legs are hollow so you can route your cables inside. Tubes are 16-gauge steel. All metal surfaces receive a durable baked-on powder-coat finish.