Roof Fan, buy 300mm Throat Size Self Driven Roof Extractor Fan Ventilator Fan Non Electric on China Suppliers Mobile

Product Details

Wind Ventilator Fan Non Electric

Product Description

1.Specifications / structure

1). Material: made of stainless steel by stretching forming, attractive appearance, no rust,

2). Bearing: wholel sealing bearing, which can ensure it operates smoothly and constantly.

3). Special central shaft design, high-class lubricating bearing system: preventing turbine blades

rotating at high speed from deformation, and extending the service life.

4). Inside support frame: stainless steel

Technical parameters

2.Advantages

1). Automatically running. wind drive. One time investment, no anymore cost.

2). No operating cost, no electricity consumption, environmental protection, energy-saving.

3). No need maintenance, long life working.

4) Light weight, strong and durable construction.

5) Weather resistance, self-cleanness, high revolving sensitivity and high air venting efficiency.

6) Easy installation:.installation position: flat roof, pitched roof, concrete roof and contour plate of

various industrial plants.

7). waterproof efficiency may reach 100%.

3.Function:

Permanently lubricated upper and lower ball bearings that ensure long life and no maintenance.
All-aluminum or Stainless steel rust-free construction.
Rigid spider-type structure.
Riveted at every connection.
21 air-foil curved vanes with rolled vane edges to deflect water.
Exclusive vari-pitch base adjusts to 12/12 roof pitch.
Large flashing for easy installation.
Tested to withstand winds of 110 m.p.h.
Easy installation.
Reduces energy bills.
Reduces winter ice build up.
Big Whirly—14” moves up to 37% more air than the 12”.