Permanently lubricated ball bearing system; all-aluminum construction; exclusive vari-pitch base adjusts to 12/12 roof pitch; tested to withstand winds of 110 MPH; easy installation and reduces winter ice breakup. Forever guarantee-residential use only.BEB12 Miami Dade County Approved 16-0510.26. BEB14 Miami Dade County Approved 15-0831.08. BEB12 features a 20" x 20" base and 17-5/8" height. BEB14 features a 22" x 22" base and 20-3/8" height.null
TURBINE VENTILATORS
EXTERNALLY BRACED - ALUMINUM
WHIRLYBIRD
Dia In=12
Color=Mill
Permanently lubricated ball bearing system; all-aluminum construction; exclusive vari-pitch base adjusts to 12/12 roof pitch; tested to withstand winds of 110 MPH; easy installation and reduces winter ice breakup. Forever guarantee-residential use only.BEB12 Miami Dade County Approved 16-0510.26. BEB14 Miami Dade County Approved 15-0831.08. BEB12 features a 20" x 20" base and 17-5/8" height. BEB14 features a 22" x 22" base and 20-3/8" height.null
TURBINE VENTILATORS
EXTERNALLY BRACED - ALUMINUM
WHIRLYBIRD
Dia In=12
Color=Mill
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Permanently lubricated ball bearing system; all-aluminum construction; exclusive vari-pitch base adjusts to 12/12 roof pitch; tested to withstand winds of 110 MPH; easy installation and reduces winter ice breakup. Forever guarantee-residential use only.BEB12 Miami Dade County Approved 16-0510.26. BEB14 Miami Dade County Approved 15-0831.08. BEB12 features a 20" x 20" base and 17-5/8" height. BEB14 features a 22" x 22" base and 20-3/8" height.null