These bricks are individually anchored through the shell. They can move sideways, up and down, even twist, without exerting undue pressure on their neighbours. Consequently, they almost never break. When chemically attacked or contaminated or otherwise melted down, single bricks can be replaced without damaging the wall structure.
We make 3 groove 230 x 230 x 100mm, 4 groove 230 x 230 x 76mm and 3 groove 450 x 300 x 100mm bricks. Quality usually keramite 4, with low thermal mass.