Providing & fixing 560 mm, 500 mm and 450 mm internal diametre circular or 450 mm x 600 mm clear inside opening rectangular RCC manhole cover and frame ISI marked as per IS:12592-2002 including carriage from the stores of the Engineer-in-charge to site of work, loading, unloading including stacking and setting the same to correct lines over manholes including cement concrete copping (M:20) around the frame etc. Dia of steel for lifting hook is 16mm. (for EHD and HD). RCC Man hole cover with Frame 450mm i/d RCC man hole cover withframe as per ISI Heavy duty