Appearance and versatility are the major assets of Grand Rib. Designed with five 0.75″ (19mm) ribs with clear, bold, modern lines, it will give your building a look of distinction. An anti-seepage rib offers a watertight lap design on roofs 3/12 pitch or more, with taped side laps on recommended fastening centres of 16″, making this profile a perfect choice for either roofing or wall applications. CL4012 is the reverse profile of Grand Rib and provides an equally-distinctive look for your wall application. Grand Rib is suitable for roof and wall applications while CL4012 is for wall applications only.