A one-piece reinforced concrete headwall to suit penstocks up to 400mm. Available with three standard backwall heights, 1.1m, 1.5m and 2m, with lifting points cast in to each wingwall for safe handling using Althon lifting clutches. Stainless steel sockets are provided for the attachment of gratings and special brackets are available for use with the anchorage system. Toe extension pieces are available for the H8C Headwall giving an overall toe depth of 710mm or 1015mm from the splashplate. Cast 150mm thick.