... rotor molded housing 3-speed selections to suit various air requirements Retractable handles and two wheels for easy ... front stand elevates outlet for better air flow Extremely High air flow with high air volume and high velocity output.4 ... 1/2 hp 3/4 hp or 1 hpMax Air Flow (CFM):3600Technical SpecificationHP (max)1,3/4, ... 1/2,1/3,1/4Max Air Flow (CFM)3600RPM750/950/1100,850/1100/1350Switch ...