Roof Attic Ventilator, 2,100 Max. Attic Area (Sq.-Ft.), 1500 CFM @ 0.000-In. SP, Automatic, 120V/ SPECIAL FEATURES: VENTILATOR FAN ROOF MOUNT AIR FLOW: 1500 CFM CONTROL: THERMOSTAT (INCLUDED) THERMOSTAT TEMP: 60 TO 120 DEGREES F MOTOR: 1/6 HP MOTOR VOLTAGE: 120 V COLOR: GRAY MATERIAL (BODY): GALVANIZED STEEL MATERIAL (DOME): ZINC PLATED STEEL HEIGHT: 9.5 INCH WIDTH: 26 INCH DEPTH: 26.6 INCH WEIGHT: 20 POUNDS VOLUME: 3.8 CUBIC FEET