providing and fixing aluminum work for doors, windows, ventilators and partitions with extruded built up standard tubular sections or appropriate z sections and other sections of approved make conforming to is 733 and is 1285, fixing with dash fasteners of required dia and size, including necessary filling up the gaps at junctions, i.e. at top, bottom and sides with required epdm rubber or neoprene gasket etc. aluminum sections shall be smooth, rust free, straight, mitred and jointed mechanically wherever required including cleat angle, aluminum snap beading for glazing or paneling, c.p. brass or stainless steel screws, all complete as per architectural drawings and the directions of engineer in charge powder coated aluminum.minimum thickness of powder coating 50 micron