NRT30 & NRT40 are PA/Rigging towers designed to fly PA Line Array systems. They are constructed using standard Truss elements and a small number of special parts. The NRT30 is suitable for small to medium-sized PA systems and can lift up to a height of approx. 8m using an electric chain hoist. The NRT40 is designed for medium to large-sized PA systems and can lift up to a height of approx. 10m.