» Badly ventilated room / work shop can reduced worker efficiency by as much as 30%. Lack of fresh air means tiredness and lack of constriction resulting in more wastage and more accidents. AEROMATIC roof mounted ventilation units counteract exactly these dangers. By improving the air in the work room you improve both the efficiency and output of your workers.  » Applications: All major industries where fumes and heat are produced such as foundries, annealing plants, welding plants, steel drawing works, rolling mills, glass plant, power plant, etc.