Portable electric ventilating fans; portable ventilating fans for commercial and industrial use; portable ventilating fans for use in commercial, military, and public service applications including use in hazardous environments; other then for generating air walls or air streams for thermal separation of air spaces having different relative air temperatures

'air':34,37,43,48 'applic':24 'commerci':9,19 'differ':46 'electr':2 'environ':29 'fan':4,7,15 'generat':33 'hazard':28 'includ':25 'industri':11 'militari':20 'portabl':1,5,13 'public':22 'relat':47 'separ':41 'servic':23 'space':44 'stream':38 'temperatur':49 'thermal':40 'use':12,17,26 'ventil':3,6,14 'wall':35

POWERSTREAM

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