Althon 500 Mitred Headwall is a fibre reinforced precast concrete headwall for pipework up to 500mm internal diameter, designed to manage surface water runoff into SUDS features or act as an outlet or overflow. Inlet profile matches a 1:3 (18°) slope for swales and ponds, with straight bar galvanised steel grating as standard.

  • Fibre reinforced precast concrete headwall for 500mm pipes
  • Open inlet design for surface water management
  • 1:3 (18°) mitred profile aligns with ground slope
  • Galvanised steel straight bar grating included
  • Can be factory fitted with 500mm inline non-return valve
  • Natural concrete finish as standard; four colour options
  • PDF and CAD files available for download

Applications

  • Surface water runoff entry to SUDS features
  • Outlets or overflows for swales and ponds
  • Pipework discharges up to 500mm internal diameter

Dimensions

Max pipe opening (PCC): 450mm

Max pipe opening (Plastic/C'ware): 500mm

Backwall height: 1100mm

Approximate weight: 5260kg

Materials

Fibre reinforced precast concrete

Galvanised steel grating

Finish

Natural concrete finish

Colour options: Cotswold, Agate, Raven Grey, Everglade

Options and variations

Factory fitted 500mm inline non-return valve (e.g. WaStop)

Technical support

Free headwall design service