procurement of spares for hvac system with supply, installation and testing for unit no. 4 at, sgtps, mppgcl, birsinghpur. as per tender schedule. procurement of spares for hvac system with supply, installation and testing for unit no. 4 at, sgtps, mppgcl, birsinghpur. as per tender schedule. , supply of floor mounted, chilled water, double skin type air handling units made of 24 mm thick panels consisting of g.i., casing of thickness 0.6 mm for both outside & inside layers encasing polyurethane foam insulation having a density of 38 kg/cum factory injected between them by injection molding machine complete with blower section with blower suitable for static pressure cooling coil section with aluminum finned copper tube cooling coil filter sections with 48 mm thick metal/viscous washable synthetic type air pre-filter, belt driven package with motor suitable for operation handling 18000 cfm (is:659 category)as per tender schedule. , installation, testing & commissioning of double skin floor mounted ahu after removing the existing old ahu setup, making new duct connection with discharge damper, new canvas connection, new water line inlet/outlet and accessories.