These products have been designed and realised upon evaluating all problems to be faced by technicians and users during election time. All Selvoline® electoral billboards have been designed to be quickly plugged into the support legs thanks to the interlocking system. Billboards with concrete ballasts have been designed to resist wind (when placing the order, the customer shall inform our design office about wind speed in the installation area). Concrete ballasts prevent electoral billboards from falling and causing potential serious damages to things and injuries to people. Patented Selvoline® ballasts are made of reinforced concrete with accident-prevention handle and designed for easy transport and storing: ballasts can be easily stacked up. Selvoline® ballasts are built in compliance with 626 and 494 Italian laws about safety and health on work. Traditional electoral billboards ballasted through galvanised sheet boxes filled with sand or concrete are also available.