MANHOLE COVERS AND FRAMES AND THEIR APPLICATIONS
LIGHT DUTY(LD-2.5)
Suitable for use within residential/institutional areas with pedestrians. Can be used as 'Inspection Chambers' also.

MEDIUM DUTY(MD-10)
Suitable for use in lane/road under medium-duty vehicular traffic.

HEAVY DUTY
Suitable for use in city trunk roads, institutions/commercial areas
with heavy duty vehicular traffic of wheel loads between 5-10 tons buses, trucks.

EXTRA HEAVY DUTY(EHD-35)
Suitable for use on carriageways in port/industrial areas with frequent loading and unloading of trucks/trailers having wheel loads up to 11.5 tons irrespective of location of manhole chambers.