Lomanco 1800 Addavent Gable Mount VentilatorLomanco 1800 Addavent Gable Mount Ventilator Features:; Exhaust louver; All-aluminum construction; Balanced blades pitched for smooth operation and high volume air removal; Factory-set adjustable thermostat, switches on at 100; F and off at 85; F; Thermostat features a "push to test" button; Can be mounted in horizontal or vertical positions on either 16" or 24" on center framing member; Can be used with Humidistat to allow the unit to discharge moisture-laden winter air automatically; Designed to mount behind existing gable louver; 3.4 amps; 1/10 HP motor