Air filtering units; air cleaning, air ventilation, and air conditioning filters; air filtration and air ventilation installations, namely, HVAC units; filter media for municipal and industrial use in the purification of water and air; air filters for odor and pollution control; components sold as parts of air filtering units, namely pre-filters; backdraft dampers, namely, control devices used in air ducts to regulate the flow of air

'air':1,4,6,9,12,15,34,35,47,61,68 'backdraft':54 'clean':5 'compon':42 'condit':10 'control':41,57 'damper':55 'devic':58 'duct':62 'filter':2,11,21,36,48,53 'filtrat':13 'flow':66 'hvac':19 'industri':26 'instal':17 'media':22 'municip':24 'name':18,50,56 'odor':38 'part':45 'pollut':40 'pre':52 'pre-filt':51 'purif':30 'regul':64 'sold':43 'unit':3,20,49 'use':27,59 'ventil':7,16 'water':32

Activated carbon for use in fans and air filtration

'activ':1 'air':8 'carbon':2 'fan':6 'filtrat':9 'use':4

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