supply and installation of new telescopic covers, 1) lhs, length - 980mm, height - 165mm,width - 560mm, number of box - 3, expansion length - 1450mm, compressive length - 680mm, end closingplate size : 6mm x 980mm x 400mm - qty - 01 no., 2) rhs, length - 980mm, height - 165mm, width - 245mm,number of box - 5, expansion length - 1040mm, compressive length - 310mm, end closing plate size : 6mm x980mm x 400mm - qty - 01 no.