bids are invited for conditioning plants at air bangalore supply of packaged type air conditioning plants of capacity 16.5 or 17 tons each , modification in existing plenum chamber , minor modification and repair of return air chamber , electrical work , dismantling of old ac plant , civil works - provision of foundation blocks and vibration isolation , civil works - provision of false ceiling , civil works - provision of fresh air window and stale air opening. , civil works - provision of heat insulation and under deck insulation , civil works - provision of platform for outdoor unit , civil works - provision for securing outdoor unit and outdoor piping , miscellaneous civil works , erection, commissioning and testing of the plant at site , provision of indicators for filter clogging and condenser clogging , supply of accessories sitc of 4 units of 16 point 5 or 17 tr aircooled packaged air total quantity : 43