... ,Factory,farm, mess hall use Product Item No.JB-1100, Top discharge Evaporative air cooler(swamp cooler)has been ... etc.· Large products range 12000m3/h to 18000 m3/h, with top or bottom air outlet. Environment friendly.No refrigation gases ... exhaust pipea)galvanized platea)galvanized platea)galvanized platea)galvanized plate b)fiberglassb)fiberglassb)fiberglassb)fiberglass c)moldingc)moldingc) ...