galvanized steel 1380 mm Greenhouse Exhaust Fan

1. High-grade push-pull fans

a. The outline border adopt advanced automatic process, more accuracy, material adopt zinc coat and zinc plate.Fan blade is made of Krupp stainless steel by punch forming, no dust, attractive and durable. Special blades shape design ensure large air volume, no deformation, no broken, keep air volume same all the way. 
b. The aluminum metal alloy of the high strength hub, adopt aviation aluminum magnesium metal alloy, light weight, high strength, good tensile.
c.  Shutter adopt special push-pull, open- close device, ensure shutter totally open and close, windproof, rainproof and dustproof.
d. Newly punch forming fan blade, reasonable angel and reach the max air flow,  mini Noise.
e. Safety nets are  easily teared down.
f. Special motor hole wind shield, avoid wind losing to reach the best wind