Hi, I ordered about 37 meters I think it was. But I did not buy the erw as the book suggests, it's much cheaper to buy normal 25mm box section, I asked for a 2mm wall, so that it was a little harder to burn through than the 1.6mm. My box section came in 7.5meter lengths, and cost £54 including vat. If I wanted erw, it was almost £150.
