My Wrekin


Hercules D400 manhole cover 1200mm x 1200mm clear opening with 150mm frame depth

Stock code Range Clear opening
Overall frame
Frame depth
Options My Wrekin
DMT0D6/1212/4 Hercules 1,200 x 1,200 1,385 x 1,385 150
  • Anti-flex covers prevent the causes of cover seating wear, eliminating excessive noise and catastrophic failure.

    Anti-flex cover
  • Specially designed cover support geometry reduces movement relative to the frame, minimising seating wear.

    Cover support geometry
  • The enlarged frame corners help to dissipate loads onto the foundation, providing a longer service life and increased reliability.

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

    Indexed corners
  • Inspection window allows safe and easy view into chamber.

    Inspection window
  • Mechanical lifting points are provided.

    Mechanical lifting point
  • Safety keyway prevents accidental disengagement of the lifting key during the handling process.

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

    PSRV tested



General information

Stock code
Primary material
Ductile iron
Manhole cover

Standards, classes and groupings

BS EN 124-2
BS EN 124 Class
BS EN 124 Group


Frame shape
Manhole shape
Overall frame (A x B)

1,385 mm x 1,385 mm

Clear opening (C x D)

1,200 mm x 1,200 mm

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

1,230 mm x 1,230 mm

Available options


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
SCREWLIFT Manhole cover levelling system
GRITBLOCKER Anti-blockage keyway insert
KEY/LONG Large cover lifting keys with a long handle (sold as a pair)
KEYS/L Small cover combined lifting key
KEYSHEAVY Large cover lifting keys with a standard handle (sold as a pair)


BS EN 124 and CD 534 apply to products with a clear opening up to 1 metre. The Hercules range of access covers have a clear opening greater than this, however load capability and design features exceed the requirements of these documents. Please note that Hercules 1,200 x 1,200mm cover is the only cover in the range to have keyholes for manual lifting. All values stated are nominal within 2.5% tolerance.

Knowledge base

1. Wrekin Products Ltd is continually seeking to improve our products and therefore reserves the right to alter product specifications without prior notice.
2. It is the responsibility of all users to satisfy themselves the above data is current.
3. Installation details are available on request.