bids are invited for repair air handling units 28900 cmh , ducting 1 mm , nitrite rubber insulation , canvas , return air grills , volume control duct damper , valves, strainers, gauges 125 mm dia , valves, strainers, gauges 65 mm dia , y - strainer , non return valve , ball valve , pressure gauge , thermometer , 10 hp star delta starter , copper conductor armored cable 3 core x 25.0 sqmm , copper conductor armored cable 4 core x 6.0 sqmm , cable tray , chilled water piping 125 mm dia , chilled water piping 65 mm dia , supply air i valve sitc of air circulation system for yoga hall under the special total quantity : 1274