Tunnel

Structure made of 2 circular cylindrical parts realized in fiberglass with high-density multiple coloured layers of resin and 2 decorative panels, as entry and exit point, in multi-layer birch wood glued with phenol formaldehyde resin with non-slip knurled surface and finished with a coloured overlay film in both sides.
Assembly system with 8.8 galvanized steel bolts and self- locking nuts.
Coloured nylon cap nuts as required by law.