... design&salable feature CE,UL,ROHS,EUR&USA Commercial air curtains and industrial air curtainsMounting height 2meters to 8metersLength 600mm , ... 900mm,1000mm,1200mm,1500mm,1800mm,2100mm,2400mm hot air curtains 1,Centrifugal type,Natural wind and PTC heating wind dual ... quality ABS with toughness intensified. 5, High quality motor,whose shell is made from aluminium , is corrosion resistance,of high ...