Turbine ventilators are available in 4" to 24" throat sizes.
They are constructed of 24 gauge galvanized steel with bottom thrust-type oil impregnated ball bearings. Vents are externally braced with aluminum painted steel bracing.
Dampers are available upon request. Damper has pull-chain operator.
Vents are mounted in standard metal building peak or hillside base to pitch of building. When ordering, specify throat size, slope, screen or damper.