Our range of plastic access chambers for underground cabling are perfect for use in Gas, Water, Electricity and Telecommunications Networks. Access to underground plant is essential for network operators to facilitate repairs or upgrades to systems. Our designs have been derived from years of research into primary use and long-term performance of existing infrastructures. The “Z” Twin Wall range was conceived from this research; it is structures in their own right and don’t require additional installation materials such as concrete to meet performance load classification B125 according to EN124**. The range comprises Z1-Z10 in sizes and depths to meet all of your pavement/sidewalk requirements.