TriStar™ D400 round manhole covers

Group 4 Circular - Hinged


Wrekin’s range of D400 Group 4, circular hinged access covers fully comply with BS EN 124:2015 and carry the BSI Kitemark Standard. The hinge allows ease of access for one man entry and the cover features a spring bar. 

Wrekin product code Overall frame size
(A mm)
Clear opening
(C mm)
Base opening
(F mm)
Frame depth
(E mm)
Hinge pocket
DMS1D4/45D/KT Ø 620 Ø 450 Ø 500 100 30
DMS1D4/60D/KT Ø 770 Ø 600 Ø 650 100 30
  • Key features:

    D400 symbol For use in a Group 4 Class D400 carriageway environment
    Fully compliant with BS EN 124:2015 
    kitemark symbol Third party certified by BSI
    Safety-stop hinges prevent covers falling once open
    Hinged product for ease of access
    ductile iron symbol Manufactured from strong and highly durable ductile iron
    Spring bar – low security locking feature
    indexed covers Indexed covers ensure correct fitting
    Leverage point for opening covers (only DMS1D4/60D/KT)
    Replaceable polymeric seat for non rock stability
    60+PSRV tested at top surface of chequer by UKAS accredited 3rd party
    keyway symbol Safety keyway – ensures key’s secure in keyway when lifting
  • Available options:

    • Locking
    • Ventilation Holes
    • Flood and Odour Control Plate
    • Safety Grille
    • Enhanced Anti-slip Coating
    • Alternative Badging

    Available Accessories:

    • ScrewLift™
    • GritBlocker™
    • BS 7903 Lifting Key

    Range data sheet:

    Access Cover D400 TriStar Round Range Sheet

    1.23 MB | Version 1 | PDF format