Althon mitred headwalls for pipework up to and including 600mm are fibre reinforced precast concrete open inlets allowing surface water runoff to enter SUDS features, or to act as an outlet or overflow. The profile of the inlet 1:3 (18 Degrees) is the same as the surrounding ground in accordance with guidelines for the construction and adoption of swales and ponds. There is a recess formed in either side to key the unit into the slope of the swale or pond and prevent it slipping.

Althon can provide their mitred headwalls with stainless steel or galvanised steel straight bar gratings. A top & bottom bracket locate the grating bars, and they are locked into position with a locking bar at the top. The bars are able to be removed individually for ease of maintenance. The grating is located in an 80mm deep recess in the face of the unit to protect it from damage during routine maintenance i.e. mowing.

Althon are also able to factory fit inline non – return valves such as WaStop valves to their Mitred Headwalls. https://www.althon.co.uk/products/mitred-headwalls/