supplying, installation and commissioning of 20nos. 2ton split type 5star 100per copper inverter type room air conditioner machine in the central library, college street campus, cu. , supplying of new 2ton split type 5star (100%copper) inverter type with dust filter, anti bacterial coating, dehumidifier, room air conditioner machine with high iseer, make-panasonic/ hitachi or equivalent including fitting, fixing & commissioning of the above machine with supplying of angle iron frames, copper pipes as required including insulation & drain pipe upto the nearest spout of drain of the building etc. all complete. (position of the indoor/outdoor units will be mentioned by the authority during executing the work.) less: 20 nos of buy back of the existing room air conditioner machines (as proposed by the librarian, cu).