MECHANICAL AND ARCHITECTURAL VENTILATING LOUVRES, AND PARTS THEREFOR; ROOF, SIDE WALL, AND INLINE DUCT EXHAUSTERS; ELECTRIC LIGHTING FIXTURES AND PARTS THEREFOR; HEATING, COOLING, VENTILATING AND AIR-CONDITIONING SYSTEMS OR UNITS COMPRISING DIFFUSERS, METAL GRILLES, REGISTERS, DAMPERS, AIR CIRCULATORY EXTRACTORS, AIR TERMINAL UNITS FOR AIR VOLUME VARIATION, AIR CONTROL UNITS, AND PARTS FOR THE ITEMS COMPRISING THE SYSTEMS; AND COMBINATION CEILING LIGHTING AND VENTILATING SYSTEMS COMPRISING LIGHTING FIXTURES, AIR DIFFUSERS, SUSPENSION MEMBERS, AND SURROUNDING CEILING PANELS

'air':27,38,41,45,48,69 'air-condit':26 'architectur':3 'ceil':61,75 'circulatori':39 'combin':60 'compris':32,56,66 'condit':28 'control':49 'cool':23 'damper':37 'diffus':33,70 'duct':14 'electr':16 'exhaust':15 'extractor':40 'fixtur':18,68 'grill':35 'heat':22 'inlin':13 'item':55 'light':17,62,67 'louvr':5 'mechan':1 'member':72 'metal':34 'panel':76 'part':7,20,52 'regist':36 'roof':9 'side':10 'surround':74 'suspens':71 'system':29,58,65 'termin':42 'therefor':8,21 'unit':31,43,50 'variat':47 'ventil':4,24,64 'volum':46 'wall':11

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