Sturdy:19"W x 12"D x 3.46"H,this 2U shelf is made from 1.5MM thickness cold rolled steel;Electrostatic powder coat preventing rust and corrosion;Reliable and durable Weight capacity:The load-bearing capacity of a single cantilever shelf is 55 pounds,and this updated version of the cantilever tray adds back support, with a load-bearing capacity of up to 110 pounds