D400 manhole covers and gully grates

Simply the best performing manhole cover on the market. Full of features that combine to give Unite the longest life and therefore the lowest whole life cost of any range.

The extensive Highway range of manhole covers delivers reliable installation and prolonged life with a solution for every scenario, with extensive options and accessories available.

TriStar manhole covers all meet the requirements of BS EN 124:2015. TriStar includes innovative design features that mark it out from the competition.

Based on our premium Unite range, Force offers round hinged manhole covers. The hinges are based on our ClearBore anti-debris technology, ensuring a simple and easy lift every time.

The ideal solution for scenarios that require extra large D400, Group 4 manhole covers. With clear opening ranging from 1,230x 1,230mm to 1800 x1800mm, Hercules offers a unique cost effective alternative to large fabricated steel solutions.

Vault secure access covers are commonly used on motorways to secure expensive equipment, particularly important with the use of valuable communication assets in the development of smart motorways.

Our premium Unite D400 gully grate combines new technology with proven features to deliver a super long-life and the lowest whole-life cost of any D400 gully grate.

Our Highway Group 4 gully grates with four flanges are designed and manufactured to meet the enhanced requirements of Highways England’s Design Manual for Roads and bridges (DMRB) specification CD 534.

Our range of Highway gully grates with 3 flanges are designed and manufactured to meet the enhanced requirements of Highways England’s Design Manual for Roads and bridges.

The V gully is ideal for use in carriage surface water drainage channels with a 1:5 shaped profile. As a safety-critical product, this design incorporates a spring lock, safety lifting keyway and captive anti-theft hinges.

Our TriStar ductile iron hinged gully addresses many issues related to cost-effective products. The frame has been designed to suit all existing gully pot styles and will sit over a typical 450mm Ø circular or horseshoe chamber.