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 red base, with the hues ranging from brownred with white shadings and blue sediments. All this in accurately defined proportions.
The colours shown are a near reflection of reality.