supply of providing and fixing factory made solid core, commercial flush door shutters non-decorative type, core of block board construction with well seasoned chemically treated timber of moisture content, not exceeding 12 per cent and side styles, top and bottom rails of main width as per i.s. code, well seasoned hard wood chemically treated and well matched commercial ply veneering with vertical grains on cross bends on both faces of shutters, hot pressed and banded with phenol formaldehyde synthetic resin conforming to i.s./ 2202 (part - i) / 1930. a) 35mm thick shutter with 100mm oxidized s.s. butt hinges with necessary screws for double or single leaf shutters complete.