Gable Attic Ventilator, 1,630 Max. Attic Area (Sq.-Ft.), 1220 CFM @ 0.000-In. SP, Automatic/ AMBIENT TEMP AT FULL RATED POWER: 60.0 DEG FAHRENHEIT AND 120.0 DEG FAHRENHEIT PRIME MOVER POWER RATING: 210.0 WATTS PART NAME ASSIGNED BY CONTROLLING AGENCY: EXHST FN WALL THRU 1220 CFM SPECIAL FEATURES: AMPS 3.1; RPM 1050; 15" (381MM) DIAMETER X 8" (203.2MM) DEPTH FREQUENCY IN HERTZ: 60.0 STYLE DESIGNATOR: 32 FIXED