Brick for stove and chimney systems has three-sided flat outer wall surface with two corners and outer sides enclosing angle of at least 60 degrees

摘要

The brick (1) consists of a massive fireproof base material. It has a three-sided flat outer wall surface (2) with two bend points or surface bends (3, 4). Each forms an edge, with or without rounding. The surface normals of adjacent outer sides of the outer wall surfaces enclose an angle of at least 60[deg]. The average wall thickness (6) is at least three cm. A tunnel (7) is formed, with wall spacing (8) narrowing toward the tunnel top (9).