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DMS1D4/45D/KT

Tristar D400 hinged circular manhole cover 450mm diameter clear opening with 100mm frame depth

Features

  • Enlarged corners spread loads evenly across the foundation, enhancing reliability and lifespan.

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

    Indexed corners
  • Safety keyways prevent accidental lifting key disengagement during handling for safer operation.

    Safety keyway
  • Hold covers securely open to prevent accidental closure during access.

    Safety stop hinges
  • A low-security spring bar lock provides quick, reliable cover retention.

    Spring bar
  • Independently tested by a UKAS-accredited laboratory to achieve a PSRV value of 70+ on the chequer surface.

    PSRV tested

Images

Specification

General information

Stock code
DMS1D4/45D/KT
Primary material
Ductile iron
Range
Category
Manhole cover
Flanges
4

Standards, classes and groupings

Standards
BS EN 124-2
BS EN 124 Class
D400
BS EN 124 Group
4
Third party certified
Kitemark

Dimensions

Frame shape
Circular
Manhole shape
Circular
Overall frame (A x B)

Ø 620 mm

Clear opening (C x D)

Ø 450 mm

Frame depth (E)
100mm
Base opening (F x G)

Ø 500 mm

EPD Data

Total life cycle (cradle to grave)
67.43 kg CO₂ equivalent
Download EPD Data
BRE Greenbook Live
BRE Verified Logo

Available options

Accessories

Stock code Description My Wrekin
PC/UNIFORM/151076 Uniform chamber adjustment unit 760mm x 100mm x 15mm
PC/UNIFORM/251076 Uniform chamber adjustment unit 760mm x 100mm x 25mm
PC/UNIWEDGE/755012 Uniform support wedge 120mm x 50mm x 75mm
YPCR/U12.5 12.5Kg Unipak® rapid curing polyester resin mortar
YPCR/U25 25Kg Unipak® rapid curing polyester resin mortar
GRITBLOCKER Anti-blockage keyway insert
SCREWLIFT Simple and rapid manhole frame levelling system. Simply push the bushes into the holes in the flange and adjust the levelling screws to the required height.
KEY/LONG Large cover lifting keys with a long handle (sold as a pair)
KEYS/L Small cover combined lifting key
DREDRING/45/35 Reducer ring with a 350mm inner diameter and 460mm outer diameter

Notes

The use of Armadillo is recommended where exposure to construction site traffic is likely

Knowledge base

  1. All information provided is subject to change without notice. While every effort is made to ensure accuracy and relevance, Wrekin Products Ltd. does not warrant the completeness or reliability of the information contained herein. Photographs, illustrations, and other visual materials are provided for illustrative purposes only. Wrekin Products Ltd. reserves the right to make design amendments or improvements to any product at any time, where such changes enhance performance or durability, without affecting compliance with the stated standards. Where errors or omissions are identified, amendments will be made as quickly as possible.
  2. It is the responsibility of all users to satisfy themselves the above data is current.
  3. All values stated are nominal within 2.5% tolerance.
  4. Installation details are available in the knowledge base.
  5. All Wrekin products are supplied subject to our Terms and Conditions of Sale.