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 hues ranging from red to dark red. The rather neutral and even colour is the result of the red baking Kesselt löss clay.
The colours shown are a near reflection of reality.