1,18" 20",24" 26",30" five different size
2,Strong Wall Bracket
3,cast iron motor body

 2011 wall mounted ventilating fan(FB-D)

1,Telescopic adjustment a high degree of freedom

2,Large air volume and low noise
3,Motor with a long service life

4,Strong Wall Bracket
5, 18", 20",24" ,26",30" five different size;

6, Suitable for heat-stroke prevention and cooling-down temperature in  factories,workshop and warehouse ect,for ventilation and improving environment;