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MAINTENANCE AND TESTING OF FIRE/SMOKE DAMPERS

www.health.state.mn.us

air ducts [see NFPA 90A(12), Sec. 4.3.5.5]. CAUTION: Care must be taken to ensure that any access panels or drop-in ceiling tiles used to provide this access do not reduce the fire resistance rating of your floorceiling or roofceiling - - assemblies. New installations

  Resistance, Testing, Maintenance, Fire, Smoke, Dampers, Duct, Maintenance and testing of fire smoke dampers, The fire resistance

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