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Althon R20B 10 3690 Right Hand Angled Rectangular Precast Headwalls are for outfalls discharging into ponds, swales, ditches beaches and rivers. Rectangular precast headwalls come with the option of two thicknesses of toe, 300mm and 500mm, each of which is available in three depths. 

Althon manufacture R20B 10 3690 Right Hand precast headwalls have a 1 : 3 wingwall profile and a backwall height of 1300mm. The headwall is 3690mm from the backwall to the end of the spillway and are manufactured in two sections

R20B 10 3690 Right Hand precast headwalls have angled spillways typically for when pipework is discharging into a river

All Rectangular Headwalls are cast with the opening in the back wall to suit the size and type of pipe being used at the invert level required.

If you require any assistance or more information please contact us by phone on 01603 488700 or by email sales@althon.co.uk

R20B 10 3690 RH Angled Rectangular Headwall line drawing
As standard our headwalls have a natural concrete finish.
We can offer coloured headwalls in 4 colours but the final shade is affected by many influences.
Our Headwall Products are available in a range of colours
Natural
Our Headwall Products are available in a range of colours
Cotswold
Our Headwall Products are available in a range of colours
Agate
Our Headwall Products are available in a range of colours
Raven Grey
Our Headwall Products are available in a range of colours
Everglade
Product Name
Max Pipe Opening PCC
Max Pipe Opening Plastic / C'ware
Backwall Height
Approx Headwall Weight (kg)
R20B 10 3690 RH Angled Rectangular Headwall
750
750
1300
5760

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    R20B 10 3690 Right Hand Angled Rectangular Headwall + 100mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 100mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 150mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 150mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 150mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 250mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 250mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 250mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 300mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 300mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 300mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 400mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 400mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 400mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 500mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 500mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 500mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 600mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 600mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 600mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 700mm Flap Valve

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 700mm Flap Valve + 3 Sided Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 700mm Flap Valve + Backwall Kee Klamp

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 100mm Penstock

    R20B 10 3690 Right Hand Angled Rectangular Headwall + 100mm Penstock + Cranked Grating

     

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