The Althon Culvert Headwall Range CSP20 will accommodate box culverts with a maximum internal dimension of 1900mm wide x 1750mm high. Available with four standard backwall heights 1300mm, 1650mm, 2000mm and 2350mm. CSP20 precast headwall units can be factory fitted with a range of accessories such as flap valves, penstocks, Kee Klamp® handrails and a selection of gratings depending on the application.
Our CSP Culvert Headwall Range is available with toe extensions either 300 or 500mm thick with depths ranging from 400 to 1000mm.
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