Fire Brigade type folding hook ladder - Built with uprights and steps in first choice ash - upright section 50X25 mm - step section 30x20 mm - complete with L-shaped iron hooks section. 35x15x5 â total open length 4.81 m - painting of the wooden parts with three layers of transparent varnish of the type for boats, applied by immersion, black painting and galvanization for the metal parts â weight approximately 17 kg â built in compliance with the ministerial technical specifications.