supply of impeller for fume extractionimpeller for fume extraction,impeller for fume extraction system no 3 as per rwf drawing no 721 9003 1 0280. note:-a)the tenderer shall be a reputed blower/impeller manufacturer and have i nhouse facility for manufacture & testing. documentary evidence should be furnished while submitting the offer. b) supplier shall be required to submit dynamic balancing c ertificate along with supply. c)the impeller should be supplied in assembled condition a long with shaft. d) the supply shall be guaranteed for quality,workmanship & perform ance for a minimum period of 12 months from the date of fitment or 18 months from th e date of supply. any replacement during this period shall be free replacement. [ warra nty period: 18 months after the date of delivery ] ] => limited