High efficiency backwardly inclined single wide airfoil bladed wheel. Square design offers a more compact design for OEM use. Exhibiting non-overloading horsepower characteristics and stable performance over the entire pressure curve. Noise levels are the lowest in the peak efficiency range of the performance curve. Capacity selections to 43,000 CFM. Class 3 wheels utilize internal blade stiffeners for higher tip speed capability.
More Info - See AS 0953 Backwardly Inclined Blower Bulletin