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 colours ranging from orangered, bright-red to violet. The red shades are obtained by using natural sands with varying baking colours. The darker shade on the facing brick is obtained by means of coal-sintering.
The colours shown are a near reflection of reality.