NIS-CO Company axial roof fans cover sizes ranging from 15" to 84" wheel diameters with capacities from 2000 CFM to 200,000 CFM. NIS-CO PRV Power Roof ventilators provide clear evidence of the continued leadership of NIS-CO in the engineering development and manufacture of ventilating fan packages for industrial and commercial ventilation. Additional information can be found at the NIS-CO company web site http://ventilating.com/products/air_handling_units.html Oleg Tchechel ventilating@ventilating.com http://ventilating.com/request.html http://ventilating.com/index.html
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