Manhole cover only MD 10 of circular shape for 500mm dia clear opening in frame, Manhole cover only HD 20 of circular shape for 560mm dia clear opening in frame, GT Cover only of rectangular shape 520mm x 560mm and 70mm thick, GT Cover only of Circular shape 660mm dia and 70mm thick, SFRC Rectangular GT Cover with frame for 450mm x 500mm size clear opening in frame, SFRC Circular GT Cover with frame for 560mm dia clear opening in frame