ROTARY TURBINE
Rotary turbin w/adjustable-pitch base720 CFM air movementFeatures internal bracking & ball bearingsRotor size: 18" diameter x 16" heightSize denotes cut-out width x diameter x heightAIC14: Internal bracing & 1/12-6/12 adj. baseGIC12WW: Internal bracing & 2/12-12/12 adj. baseGC12E: External bracing & 2/12-12/12 adj. baseAluminum