supply of maintenance items.(purlin of size 66 x 33 x 2.9mm thick hollow steel section 3 mtrl long shall be fixed and flushed with 5mm thick end plates of size 65mm x 125mm with 10mm nut/bolts. switch socket combination 5 amp with gang box switch socket combination 15 amp with gang box switchboardpvc7x4asperis3419-1988.make havells/ ajontaplast/ anchor/plaza.pre-painted sand coloured galvalume aluminum profile (ppgl) sheet of size 1000mm x 60mm x 0.50mm thick (make : tata/jindal/sail/apl apollo) self tapping screws of size 50mm , good quality switchboardpvc8x6asperis3419-1988.make havells/ ajontaplast/ anchor/plaza. fixing of cement particle board of size 595 x 595 x 4mm thick (e board false ceiling) incl ppgi t and gi angle and all accessories (make : everest)