FEATURES  Truly portable at 151 lbs and only 22.5"w x 31.5"d x 55"h.  One-person operation, in and out of service vehicle and up and down stairs.  4 speed soft start 3.0 HP motor w/ 3 phase inverter and direct drive backward incline blower assembly.  Filtration includes 1st stage 18" x 24" x 2" disposable pleated filter, 2nd stage 18" x 24" flexible permanent electrostatic air filter and 3rd stage 18" x 24" x 6" certified HEPA filter, providing efficient filtration with maximum air flow even when dirty.  12 inch diameter inlet pulls over 5 inches of w.c. static pressure, and 3,500 CFM air flow (independently tested by an AMCA certified lab with all filters installed).  12" rear, non-marking dolly wheels, 4" swivel non-marking casters up front.  Rugged steel reinforced, rotationally molded, 2-piece poly cabinet with stairwell friendly design.  Completely field tested by Air-Care, in our service division