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Vault™ D400 manhole covers

Vault secure access covers exceed the requirements of LPCB level 3 version 8, the stainless steel lock provides rugged durability and reliability.

Designed and manufactured to meet the enhanced requirements of Highway England’s CD 534 specification, our hinged Vault range of access covers exceeds BS EN 124:2015 D400 requirements and include unique safety features, including a sequential opening locking system and stops which fix the covers in a unique, simple to use, upright position for safe and simple operation.



  • 60+PSRV tested at top surface of chequer by UKAS accredited 3rd party.

    PSRV tested
  • Captive hinges reduce theft risk whilst allowing easy lifting.

    Captive hinges
  • Enlarged frame corners help to dissipate, load minimising bearing pressure.

    Enlarged frame corners
  • Indexed corners ensure correct orientation first time, every time.

    Indexed corners
  • Safety keyway prevents accidental disengagement of the lifting key during the handling process.

    Safety keyway
  • Safety-stop hinges prevent covers falling once opened.

    Safety stop hinges
  • Sequential cover opening.

    Sequential cover opening


Manhole covers - Square

Stock code Range Overall frame
(A x B)
Clear opening
(C x D)
Frame depth
Base opening
(F x G)
Datasheet My Wrekin
DMH0D4/7567/K Vault 950 mm x 875 mm 750 mm x 675 mm 100 mm 775 mm x 700 mm
DMH0D4/9045/K Vault 1,090 mm x 650 mm 900 mm x 450 mm 100 mm 925 mm x 475 mm
DMH0D4/9060/K Vault 1,090 mm x 800 mm 900 mm x 600 mm 100 mm 925 mm x 625 mm
DMH0D4/1361/K Vault 1,490 mm x 810 mm 1,300 mm x 610 mm 100 mm 1,325 mm x 635 mm
DMH0D4/1383/K Vault 1,490 mm x 1,050 mm 1,300 mm x 850 mm 100 mm 1,325 mm x 875 mm

Available options and accessories


  • Enhanced anti-slip coating
  • Alternative badging
  • Flood and odour control plate
  • Safety grilles


Related case study

Solving Virgin Medias Failing Manhole Cover Issue

Virgin Media were experiencing serious problems with a manhole cover situated in a bus lane on Essex Road in Islington. Complaints from local residents and business owners were escalating and relationships with the local authority were becoming strained. Wrekin Products proposed the use of their Unite™ manhole cover and frame together with the UniPak™ bedding system.

Virgin Media
Virgin Media
Read the full Case Study
Related case study

M25 hard shoulder improvements

Mouchel were contacted by the Highways Agency (HA) and tasked with investigating the most cost effective and reliable way to utilise the hard shoulder of the M25 during peak rush hours. This posed several engineering problems, of which one was to consider the service life of the manhole covers that would now be located in the wheel track of one of Europe’s busiest stretches of motorway.

Read the full Case Study