... design, good quality High air velocity of air curtain with ISO, CE, UL, ROHS Theodoor air curtain -900,1000,1200,1500, ... 1800mmHigh quality, attractive design and fine workmanship. ISO, CE, UL, ROHS.Optimized fan wheel ... with large air volume and low noise; Compact construction, obtaining stable and even air curtain. Reliable designed ...