DK Spacer, L: 50 mm, For TS roof plate, Spacer for roof plate, Hexagon steel section, Zinc-plated, Assembly components, 50 mm, 1.97 in, 73269098, 4 pc(s), 0.979 lbs, 4028177186934, For raising the roof for ventilation purposes, available in three different heights. Not suitable for crane transport.