Highway®

D400 manhole covers

Ductile iron D400 access covers

Designed and manufactured to meet the enhanced requirements of Highways England’s CD 534 (Formerly HA 104/09) specification. The Highway range of access covers and gully grates exceed BS EN 124:2015 requirements and include patented safety and specific design features required by Highways England.

Key features

D400 For use in a Group 4 Class D400 carriageway environment
BD EN 124 Exceeds BS EN 124:2015 requirements
kitemark Third party certified by BSI
Complies with DMRB (Design Manual for Road & Bridges, CD534)
Complies with MCHW (Manual for Contract Highway Works, Series 500)
enlarged flange Patented frame design with enlarged frame corners that help dissipate load
HA104-09 Exceeds Highways England’s HA 104/09 requirements
keyway A patented safety keyway prevents accidental disengagement during the lifting operation. Also compatible with standard D400 lifting keys.
non-rock Three point suspension on covers for non-rock stability
indexed covers Indexed covers ensure correct fitting
ductile iron Manufactured from strong and highly durable ductile iron
Mechanical lifting points
60+PSRV tested at top surface of chequer by UKAS accredited 3rd party

Sizes and availability

Wrekin product code Clear opening size (mm) Frame depth (mm) Overall frame size (mm)
DMT0D4/4545/KHSQR 450 x 450 150 660 x 660
DMT0D4/4545/KH 450 x 450 100 665 x 665
DMT0D6/4545/KH 450 x 450 150 665 x 665
DMT0D4/6045/KH 600 x 450 100 815 x 665
DMT0D6/6045/KH 600 x 450 150 815 x 665
DMT0D4/6060/KH 600 x 600 100 810 x 810
DMT0D6/6060/KH 600 x 600 150 810 x 810
DMT0D4/6767/KH 675 x 675 100 885 x 885
DMT0D6/6767/KH 675 x 675 150 885 x 885
DMT0D4/7560/KH 750 x 600 100 965 x 815
DMT0D6/7560/KH 750 x 600 150 965 x 815
DMT0D4/7575/KH 750 x 750 100 965 x 965
DMT0D6/7575/KH 750 x 750 150 965 x 965
DMT0D4/9060/KH 900 x 600 100 1115 x 815
DMT0D6/9060/KH 900 x 600 150 1115 x 815
DMT0D4/9090/KH 900 x 900 100 1130 x 1130
DMT0D6/9090/KH 900 x 900 150 1130 x 1130
DMT0D4/1267/KH 1220 x 675 100 1460 x 895
DMT0D6/1267/KH 1220 x 675 150 1460 x 895

Note: The use of road plates is recommended where exposure to construction site traffic is likely.

Available options:

  • Locked
  • Badged (‘SW’, ‘FW’ etc.)
  • Ventilation holes
  • Flood and odour control plate
  • Safety grille
  • Enhanced anti-slip coating

Available Accessories:

  • GritBlocker™ anti-blockage keyway insert
  • ScrewLift™ frame levelling system
  • ClickLift™ frame raising system
  • BS 7903 Lifting Keys