Cutting side panels, ready to glue them on. Panels are a plastic alloy sign board. They are about 3 mm of plastic core, with about 1/2 mm alloy each side, either mill (unpainted) or in a variety of colours. We were able to get 3 m x 1.5 m, for the sides, and 4.8 m x 1.5 m, for over the top.