Air filtering installations; Air filtering units; Air purifying apparatus and machines; Fans for air conditioning apparatus; Fans for HVAC units; Ventilating exhaust fans; Ventilating exhaust fans for household use,commercial use; Ventilating fans for commercial and industrial use; Ventilating fans for industrial purposes; Ventilating, high-velocity fixed exhaust fans for commercial and agricultural use; Ventilation fan accessories, namely, grilles; Ventilation hoods

'accessori':58 'agricultur':54 'air':1,4,7,14 'apparatus':9,16 'commerci':30,35,52 'condit':15 'exhaust':22,25,49 'fan':12,17,23,26,33,40,50,57 'filter':2,5 'fix':48 'grill':60 'high':46 'high-veloc':45 'hood':62 'household':28 'hvac':19 'industri':37,42 'instal':3 'machin':11 'name':59 'purifi':8 'purpos':43 'unit':6,20 'use':29,31,38,55 'veloc':47 'ventil':21,24,32,39,44,56,61

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