Taking down of chowkats or frames not exc 1.5 sqm each with shuttersspecified as directed,supply and fixing factory made upvc door frame overall dimension 48x40 mm with wall thickness 2.0 mm m.s. tube of size 19 x 19 mm as specified as directed,providing and fixing factory made upvc with wall thickness of 23mm 02mm as specified as directed,m and l sheet glass 4.8 mm thick ordinary quality and glazing exc 0.50 sqm as specified as directed,taking down steel tubing having bore of pipe 25 to 32 mm as specified as directed,taking down steel tubing having bore of pipe 20 mm and as specified as directed,s and f for 25 mm outer dia cpvc sdr 11 and plain cpvc sdr 11 fittings in trenches completeas specified as directed,supply and fixing for 20 mm outer dia cpvc sdr 11 and plain cpvc sdr 11 fittings on walls or ceiling or all as specified and directed,supply and fixing in repair 18kw steam generator residential steam ers 310 400 cubic feet as specified as directed,supply and fixing in repair 30 kw steam generator p