1.greatly wind,low noise
2.composition easily,solid durable
3.moveable, air changed well
4.overheat-prevention,more safely

size     model          power        frequency      watts      speed      pressure     flow  rate   

16"     TB-40C-2       380              50                1,1          2900           160             9500

16"     TB-40C-4       380              50                0,75        1450           150             8500

20"     TB-50C-4       380              50               1,5           1450           210            11000

24"     TB-60C-4       380              50                2,2          1450           270             16300

Certificate  :  CCC    CE   ROHS