The facade bricks (non-perforated) have five sand covered sides and one side with possible oblong groove. The structure looks rugged with fine and irregular grooves in the sandy surface. The baking process takes place in a gas-heated tunnel oven under slightly reduced atmosphere.
The brick has a yellow base. The colour variations show pastel-coloured shades from orange-red to dark red, alternating with yellow nuances. The ageing process also influences the colour shades.