Constructed with plywood and other materials, the hollow sides are 2-1/2" thick. Overall dimensions of the model shown are 55" x 21" x 28" tall. Very strong. Can support a lot of weight. After wood construction, this particular table received over eights coats of white hi-gloss spray lacquer. It's being used for an electronic keyboard. But the design can be applied to other applications…including desk, coffee table, or small breakfast table.