... Thickness:100,150,200,300mm fengrui evaporative cooling pad wall systems Model no.: 5090 Features: 1) H: 1,500mm, 1,800mm ... and air4) Outer frame can be ale of aluum alloy, PVC and gaed boardCooliuch treatment, the wet and cool air comes ... indoor air in working environment. fengrui evaporative cooling pad wall systems