- Permanently lubricated upper and lower ball bearings that ensure long life and no maintenance
- Riveted at every connection
- 21 air foil curved vanes with rolled vane edges to deflect water
- Large flashing for easy installation
- Tested to withstand winds of 110 mph
- Easy installation
- Reduces energy bills
- Reduces winter ice build up
- Big Whirly 14 in moves up to 37% more air than the 12 in
- 12 in Dia Throat
- Aluminum
- Brown