product description:
Permanently lubricated upper and lower ball bearing system that ensures long life and no maintenance; all-aluminum rust free construction; exclusive vari-pitch base adjusts to 12/12 roof pitch; tested to withstand winds of 110 MPH. Easy installation and reduces winter ice buildup. Forever guarantee - residential use. BIB12 Dade County Approved 11-0822.05. BIB14 Miami Dade County Approved 10-0928.05. BIB12 features a 20" x 20" base and 17-1/4" height. BIB14 features a 22" x 22" base and 20" height. Turbines are exhaust vents.Featuring permanently lubricated upper and lower ball bearings, the Lomanco 12-inch whirlybird turbine ventilator ensures long life and no maintenance. It reduces winter ice build-up, as well as energy bills. Made with all-aluminum, rust-free construction, this internally braced turbine ventilator withstands winds up to 147 MPH. With a rigid, spider-type structure, it s riveted at every connection. The ventilator features 21 air-foil curved vanes with rolled vane edges to deflect water and a vari-pitch base that adjusts to a 12/12 roof pitch. Designed for residential use only, this turbine ventilator comes with a lifetime warranty.
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