CPM offer a range of custom traditional tongue and groove range of manholes that comply with BS EN 1917:2002/BS 5911-3:2010 from 900mm to 3000mm.
CPM manufacture 4000mm and 3660mm bespoke manholes that are not covered by the European and British standard but comply with the relevant provisions of the standards.
Visit the Marshalls CPM website for more information on Bespoke Traditional Manholes