MaxxFan Inake or Exhaust 10 speed

The MaxxFan® is the only complete RV ventilation system that incorporates a vent, fan and rain protection in a single all-in-one-unit. The Only RV Ventilator Fan with a Built-In Rain Cover! Weight: 18.6000 Type: Manual Opening Length (IN): 14 Inch Width (IN): 14 Inch Color: White With Screen: Yes With Fan: Yes With Lid: Yes With Mounting Hardware: Yes     Features Flush Mounted, Easy To Clean Keypad, Controls Fan Speed, Thermostat, Air Intake And Exhaust Functions Open And Close The Vent Lid By Simply Rotating The Knob, Push The Knob Up To Lock In Place Operate The Fan While Driving. The Locking Knob Ensures The Vent Lid Stays Fully Open Or Closed Fan Runs With Lid Closed To Circulate Air (Ceiling Fan Mode) Features A Powerful 10-Speed Fan Motor Limited 2 Year Warranty With Limited Lifetime Warranty On Lid