HVAC System comprised of HVAC units, metal air-conditioning ducts, and nonmetal air-conditioning ducts; HVAC Units; HVAC units featuring attached HVAC ductwork in the nature of metal air-conditioning ducts and non-metal air-conditioning ducts

'air':9,15,32,40 'air-condit':8,14,31,39 'attach':23 'compris':3 'condit':10,16,33,41 'duct':11,17,34,42 'ductwork':25 'featur':22 'hvac':1,5,18,20,24 'metal':7,30,38 'natur':28 'non':37 'non-met':36 'nonmet':13 'system':2 'unit':6,19,21

non-metal air-conditioning ducts in the nature of a system of ductwork made of polymers; a system of ductwork made of a combination of polymers and metals, namely, a ductwork system comprised of non-metal air-conditioning ducts and metal air-conditioning ducts

'air':5,41,47 'air-condit':4,40,46 'combin':26 'compris':35 'condit':6,42,48 'duct':7,43,49 'ductwork':15,22,33 'made':16,23 'metal':3,30,39,45 'name':31 'natur':10 'non':2,38 'non-met':1,37 'polym':18,28 'system':13,20,34

metal air-conditioning ducts in the nature of a system of ductwork made of metal; a system of ductwork made of a combination of polymers and metals, namely, a ductwork system comprised of metal air-conditioning ducts and non-metal air-conditioning ducts

'air':3,37,45 'air-condit':2,36,44 'combin':24 'compris':33 'condit':4,38,46 'duct':5,39,47 'ductwork':13,20,31 'made':14,21 'metal':1,16,28,35,43 'name':29 'natur':8 'non':42 'non-met':41 'polym':26 'system':11,18,32

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