D400 manhole covers

Ductile iron access covers

Tristar manhole covers

The TriStar range of D400 ductile iron access covers fully comply with BS EN 124:1994 and carry the British Standard kitemark. TriStar also possesses some innovative design features that mark it out from the competition.

Key features

D400 symbol For use in a Group 4 Class D400 carriageway environment Tri-Star manhole cover
kitemark symbol All fully comply with BS EN 124:1994 and are Kitemarked by BSI
keyway symbol A patented safety keyway prevents accidental disengagement during the lifting operation. Also compatible with standard D400 lifting keys.
non-rock symbol Three point suspension on covers for non-rock stability
ductile iron symbol Manufactured from strong and highly durable ductile iron
enlarged flange symbol Patented frame design with enlarged frame corners that help dissipate load

Sizes and availability

Wrekin product code Clear opening size (mm) Frame depth (mm) Over frame size (mm)
DMT0D4/4545/KT 450 x 450 100 570 x 570
DMT0D4/6045/KT 600 x 450 100 740 x 590
DMT0D4/6060/KT 600 x 600 100 720 x 720
DMT0D6/6060/KT 600 x 600 150 720 x 720
DMT0D4/6767/KT 675 x 675 100 800 x 800
DMT0D6/6767/KT 675 x 675 150 800 x 800
DMT0D4/7575/KT 750 x 750 100 940 x 940

Available options:
SW or FW integrally badged (other badging available on request).
Ventilation holes, locked covers, sealing plates and safety grilles.

Download PDF data sheet

TriStar D400 cover range

624.01 KB | Version 4-1107E | PDF format

TriStar D400 cover range
  • Individual data sheets

  • Installation guidance

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