IBR is an abbreviation for Inverted Box Rib, an angular trapezoidal fluted profile sheet with a bold appearance which makes it both attractive and practical. Tufdek has an effective covering width of 686 mm designed for use as side cladding or roofing material in commercial, industrial and residential buildings. The deep broad flute design offers excellent drainage characteristics combined with optimum weight versus load/span capabilities. Tufdek can be factory cranked, curved and bullnosed to various radii depending on customer’s requirements.