The Clip-in system consists of square tiles or rectangular panels, which can be clipped on to carriers which are profiled to receive the tiles. Two sides of each tile are raised and piped and stopped to ensure positive engagement into the spring tee and yet allow for the demounting of individual tiles or panels. The Tiles are made of Steel or Aluminum on sophisticated equipment, which includes several leveling stages. The tiles can be coil coated or powder coated in multiple colors. Perforation can be 2.5mm or 1.7mm.