Bio-filter Pump  http://www.bullard.com/Respi ratory/air_accessories/air_pu mps/index.shtml http://www.bullard.com/Respi ratory/air_accessories/air_pu mps/index.shtml  Image and cfm data  Electricity draw data  Operating Cost: $0.068 / kw-hr  http://www.bullard.com/Respi ratory/air_accessories/air_pu mps/index.shtml http://www.bullard.com/Respi ratory/air_accessories/air_pu mps/index.shtml  Image and cfm data  Electricity draw data  Operating Cost: $0.068 / kw-hr
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