Metal suspended ceiling systems comprising ceiling hanger plates and wires, ceiling tiles, median ceiling structural crosses, ceiling support and suspension grids, ceiling tees, and ceiling support flanges, all used as integral components of heating, ventilating and air conditioning systems

'air':37 'ceil':3,6,11,14,17,22,25 'compon':32 'compris':5 'condit':38 'cross':16 'flang':27 'grid':21 'hanger':7 'heat':34 'integr':31 'median':13 'metal':1 'plate':8 'structur':15 'support':18,26 'suspend':2 'suspens':20 'system':4,39 'tee':23 'tile':12 'use':29 'ventil':35 'wire':10

Components for heating, ventilating and air conditioning systems, namely, air diffusers for distributing and direction of flow of air, ventilation grills and heat registers, air valves for air conditioners, variable air volume (VAV) damper valves for air conditioners, thermostatic valves as parts of heating installations, fan powered electric space and hot water heaters, and electric bypass ventilating exhaust fans

'air':6,10,19,25,28,31,37 'bypass':56 'compon':1 'condit':7 'condition':29,38 'damper':34 'diffus':11 'direct':15 'distribut':13 'electr':48,55 'exhaust':58 'fan':46,59 'flow':17 'grill':21 'heat':3,23,44 'heater':53 'hot':51 'instal':45 'name':9 'part':42 'power':47 'regist':24 'space':49 'system':8 'thermostat':39 'valv':26,35,40 'variabl':30 'vav':33 'ventil':4,20,57 'volum':32 'water':52

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