three dimensional box art rectanglethree dimensional box art rectangle You can create works with depth by using three sides. The sides are pre grooved for easy assembly! This is an easy to assemble kit that can be used for a wide range of purposes, such as for flat construction or as a background for three dimensional works. MDF (grooved): 208 x 104 x 6 mm x 1, MDF (grooved): 202 x 104 x 4 mm, MDF: 202 x 202 x 4 mm MDF 2081046mm (grooved) x 1 MDF 2021044mm (grooved) x 1 MDF 2022024mm x