1. Creates an immediate watertight structure
2. Prefabricated off-site (minimising on-site labour and costs)
3. Quick and efficient to install
4. Accommodates connection to all types of pipe used in road and manhole construction
5. Safety benefits gained in the construction of manholes as the pre-formed sump and connect seals eliminate on-site construction, thus greatly reducing labour activity within the manhole
6. Quality is greatly increased as construction is within the factory environment and complies with BS EN 1917 and BS 5911
7. Yields environmental benefits such as lower carbon footprint, less concrete used on-site and less excavated material removed from site