tender for work of replacement of hood and allied accessories of the air pollution control system at govari hindu cemetery in f-north ward.- 1 work of supply and installation of hood above the pyre made out of 2 mm thick s.s 410 sheet with necessary m.s. supporting angles / channels and providing connection to main duct as per specifications. 2 work of supply and installation of damper assembly of 600 mm dia made out of 3 mm thick having 6 mm thick rotating flap inside. the damper shall be provided with s.s chain for smooth operation of damper flap. 3 work of supply and installation of main duct made out of 3 mm thick s.s 304 plate shall be connected with hood outlet, water scrubber unit, exhaust air blower, bypass arrangement of scrubber etc. the end flanges of ducting shall be 6 mm thick x 40 mm wide made out of s.s 304 material . the ducting shall be provided with s.s. 304 nuts, bolts, washer; asbestos rope etc. ducting shall be installed at site at suitable height with m.s. angle/ channel/ brackets etc. taking support of existing shed m.s. i beam/ support as required.