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GG Unite D400

Unite D400 gully grate mm x mm

  • Reversible hinge allows the grating to hinge with the direction of the traffic flow, improving safety.

    Reversible hinge
  • Specially designed cover support geometry reduces movement relative to the frame, minimising seating wear.

    Cover support geometry
  • Enlarged frame corners help to dissipate, load minimising bearing pressure.

    Enlarged frame corners
  • Beam in beam design

    Beam in beam design
  • Anti-flex covers prevent the causes of cover seating wear, eliminating excessive noise and catastrophic failure.

    Anti-flex cover
  • Mechanical lifting points are provided.

    Mechanical lifting point
  • Hinged in 3 directions – product can fit in any required orientation.

    Hinged in 3 directions
  • Safety-stop hinges prevent covers falling once opened.

    Safety stop hinges

Product images

Product drawings

General information

Stock code
GG Unite D400
Primary material
Ductile iron
Gully grate

Standards, classes and groupings

BS EN 124 Class
BS EN 124 Group


The D400 load capability of these Group 3 products also offers the benefit of making them suitable for exposure to Group 4 traffic types.

Where 3-flange D400 Gully Grate assemblies are employed, we recommend that they are installed against a kerb, not in an open highway location.

1. Wrekin Products Ltd is continually seeking to improve our products and therefore reserves the right to alter product specifications without prior notice.
2. It is the responsibility of all users to satisfy themselves the above data is current.
3. Installation details are available on request.