Direct Gas-Fired Make-up Air Units supply tempered and filtered air to the indoor environment. In summer, a direct-fired unit may be used as an air handler, with the heater disabled. By adding a DX or evaporative cooling section to the unit, it may be used to supply conditioned air year round. Additional information can be found at the ABB Blower company web site http://www.abbblower.com/products/centrifugal_wall_roof_ventilators.html Susann Terlitski nis@primus.ca http://www.abbblower.com/products/utility_fans.html http://www.abbblower.com/products/pedestal_air_circulators.html
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