The Althon H3G Headwall is a one-piece glass reinforced cement (GRC) headwall with an opening to suit 150mm diameter pipes and knockout webs to enlarge to 225mm and 300mm diameter pipes. Stainless steel sockets are provided for the attachment of gratings. The dimensions of the unit are as the H3C (linked below) with a reduced toe depth of 150mm and nominal wall thickness of 20mm.

If you require any assistance or more information please contact us by phone on 01603 488700 or by email

H3G Headwall line drawing
Product Name
Max Pipe Opening PCC
Max Pipe Opening Plastic / C'ware
Backwall Height
Approx Headwall Weight (kg)
H3G Headwall

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    Datasheet and Installation Instructions for H3G Headwall

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