D400 manhole covers – UNITE

Unite manhole covers

Ductile iron D400 HA104/09 access covers

Simply the best D400 access cover range available in the market. Full of patented design features that combine together to give Unite the longest life and therefore lowest whole life cost of any D400 access cover. Exceeds both BS EN 124:1994 and HA 104/09 requirements.

Key featuresSizes and availabilityDownload PDF data sheet
D400 For use in a Group 4 Class D400 carriageway environment unite manhole cover
kitemark All fully comply with BS EN 124:1994 and are Kitemarked by BSI
HA104-09 Complies fully with UK Highways Authority specification HA 104/09 with enlarged frame flanges and corners and the inclusion of lifting points
safety key A patented safety keyway prevents accidental disengagement during the lifting operation. Also compatible with standard D400 lifting keys.
non-rock Three point suspension on covers for non-rock stability
b125 Manufactured from strong and highly durable ductile iron
frame Patented frame design with enlarged frame corners that help dissipate load
Framegrip Patented “Framegrip” mortar gripping system built into the underside of the frame that improves the bedding mortar grip to the frame, reducing lateral shift and mortar breakdown
beam “Anti-flex” beams increase cover stiffness thereby helping to eliminate at source the main cause of cover seating wear and therefore excessive noise and ultimately catostrophic failure
support Specially designed cover support geometry reduces movement relative to the frame and therefore seating wear
support Specially designed frame flanges – help limit bedding mortar crack propagation
Wrekin product code Clear opening size (mm) Frame depth (mm) Over frame size (mm)
DMT0D4/6060/KU 600 x 600 100 810 x 810
DMT0D6/6060/KU 600 x 600 150 810 x 810
DMT0D6/6767/KU 675 x 675 150 890 x 890
DMT0D6/7560/KU 750 x 600 150 960 x 810
DMT0D6/7575/KU 750 x 750 150 960 x 960
DMT0D6/9060/KU 900 x 600 150 1100 x 810
DMT0D6/1267/KU 1200 x 675 170 1470 x 915

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

Unite D400 access covers

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